class Constant:
    subject_chapters = {
        'physics': set(['SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS',
                        'THERMAL PROPERTIES OF MATTER', 'CURRENT ELECTRICITY',
                        'ELECTROMAGNETIC INDUCTION', 'UNITS AND MEASUREMENT',
                        'ELECTRIC CHARGES AND FIELDS', 'MOVING CHARGES AND MAGNETISM',
                        'WORK, ENERGY AND POWER', 'LOCOMOTION AND MOVEMENT',
                        'THERMODYNAMICS', 'WAVE OPTICS',
                        'RAY OPTICS AND OPTICAL INSTRUMENTS', 'MOTION IN A STRAIGHT LINE',
                        'OSCILLATIONS', 'EQUILIBRIUM', 'MOTION IN A PLANE',
                        'MECHANICAL PROPERTIES OF FLUIDS', 'LAWS OF MOTION',
                        'MAGNETISM AND MATTER', 'HEAT',
                        'SYSTEMS OF PARTICLES AND ROTATIONAL MOTION',
                        'STARS AND THE SOLAR SYSTEM', 'KINETIC THEORY', 'GRAVITATION',
                        'WAVES', 'MECHANICAL PROPERTIES OF SOLIDS', 'ALTERNATING CURRENT',
                        'ELECTROSTATIC POTENTIAL AND CAPACITANCE', 'METALS AND NON-METALS',
                        'MAGNETIC EFFECTS OF ELECTRIC CURRENT',
                        'PHYSICAL AND CHEMICAL CHANGES', 'SOUND', 'CONSTRUCTIONS', 'LIGHT',
                        'ELECTROMAGNETIC WAVES', 'SOURCES OF ENERGY',
                        'ELECTRIC CURRENT AND ITS EFFECT', 'FORCE AND LAWS OF MOTION',
                        'FORCE AND PRESSURE', 'PHYSICAL WORLD', 'ELECTRICITY',
                        'LIGHT - REFLECTION AND REFRACTION']),
        'chemistry': set(['GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS',
                        'THE p-BLOCK ELEMENTS', 'REDOX REACTIONS', 'STRUCTURE OF ATOM',
                        'COORDINATION COMPOUNDS', 'ATOMS',
                        'CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES',
                        'CHEMICAL KINETICS', 'ENVIRONMENTAL CHEMISTRY',
                        'THE d-AND f-BLOCK ELEMENTS', 'COMBUSTION AND FLAME',
                        'ACIDS, BASES AND SALTS', 'SURFACE CHEMISTRY',
                        'ORGANIC CHEMISTRY – SOME BASIC PRINCIPLES AND TECHNIQUES',
                        'SOME BASIC CONCEPTS OF CHEMISTRY', 'STATES OF MATTER',
                        'THE s-BLOCK ELEMENTS', 'CHEMISTRY IN EVERYDAY LIFE',
                        'MOLECULAR BASIS OF INHERITANCE', 'HYDROGEN', 'ELECTROCHEMISTRY',
                        'ALDEHYDES, KETONES AND CARBOXYLIC ACIDS', 'CONIC SECTIONS',
                        'POLYMERS', 'CHEMICAL BONDING AND MOLECULAR STRUCTURE',
                        'ALCOHOLS, PHENOLS AND ETHERS', 'AMINES',
                        'CHEMICAL COORDINATION AND INTEGRATION',
                        'PERIODIC CLASSIFICATION OF ELEMENTS', 'COAL AND PETROLEUM',
                        'CHEMICAL EFFECTS OF ELECTRIC CURRENT', 'FIBRE TO FABRIC',
                        'CARBON AND ITS COMPOUNDS', 'CHEMICAL REACTIONS AND EQUATIONS',
                        'MATERIALS : METALS AND NON-METALS', 'STRUCTURE OF THE ATOM',
                        'ATOMS AND MOLECULES']),
        'math': set(['APPLICATION OF INTEGRALS', 'APPLICATION OF DERIVATIVES',
                        'CONTINUITY AND DIFFERENTIABILITY', 'STRAIGHT LINES', 'STATISTICS',
                        'PAIR OF LINEAR EQUATIONS IN TWO VARIABLES', 'NUMBER SYSTEMS',
                        'LIMITS AND DERIVATIVES', 'VECTOR ALGEBRA', 'MATRICES',
                        'THREE DIMENSIONAL GEOMETRY', 'DIFFERENTIAL EQUATIONS',
                        'TRIGONOMETRIC FUNCTIONS', 'BINOMIAL THEOREM',
                        'AREAS RELATED TO CIRCLES', 'CIRCLES', 'QUADRATIC EQUATIONS',
                        'POLYNOMIALS', 'UNDERSTANDING QUADRILATERALS', 'RATIONAL NUMBERS',
                        'SOLUTIONS', 'ALGEBRAIC EXPRESSIONS AND IDENTITIES',
                        'SQUARES AND SQUARE ROOTS', 'SEQUENCES AND SERIES', 'DETERMINANTS',
                        'RELATIONS AND FUNCTIONS', 'COMPARING QUANTITIES',
                        'THE TRIANGLE AND ITS PROPERTIES',
                        'COMPLEX NUMBERS AND QUADRATIC EQUATIONS',
                        'SURFACE AREAS AND VOLUMES', 'TRIANGLES',
                        'PERMUTATIONS AND COMBINATIONS', 'INTEGRALS', 'PERIMETER AND AREA',
                        'LINEAR EQUATIONS IN ONE VARIABLE', 'SETS', 'PROBABILITY',
                        'INVERSE TRIGONOMETRIC FUNCTIONS',
                        'PRINCIPLE OF MATHEMATICAL INDUCTION',
                        'LINEAR EQUATIONS IN TWO VARIABLES', 'MATHEMATICAL REASONING',
                        'INTRODUCTION TO TRIGONOMETRY', 'FRACTIONS AND DECIMALS',
                        'PRINCIPLES OF INHERITANCE AND VARIATION', 'FACTORISATION',
                        'REAL NUMBERS', 'PRACTICAL GEOMETRY', 'INTRODUCTION TO GRAPHS',
                        'DATA HANDLING', 'LINES AND ANGLES', 'CUBES AND CUBE ROOTS',
                        'INTEGERS', 'QUADRILATERALS', 'LINEAR PROGRAMMING',
                        'SIMPLE EQUATIONS', 'CONGRUENCE OF TRIANGLES',
                        'VISUALISING SOLID SHAPES', 'SYMMETRY', 'ALGEBRAIC EXPRESSIONS',
                        'SOME APPLICATIONS OF TRIGONOMETRY',
                        'INTRODUCTION TO EUCLID’S GEOMETRY', 'RATIO AND PROPORTION']),
        'biology': set(['ANATOMY OF FLOWERING PLANTS', 'LIFE PROCESSES', 'BIOMOLECULES',
                        'NUCLEI', 'WINDS, STORMS AND CYCLONES',
                        'HOW DO ORGANISMS REPRODUCE?',
                        'EXCRETORY PRODUCTS AND THEIR ELIMINATION',
                        'BODY FLUIDS AND CIRCULATION', 'MORPHOLOGY OF FLOWERING PLANTS',
                        'MENSURATION', 'CELL CYCLE AND CELL DIVISION',
                        'REPRODUCTIVE HEALTH', 'RESPIRATION IN PLANTS',
                        'TRANSPORT IN PLANTS', 'ENVIRONMENTAL ISSUES',
                        'CELL : THE UNIT OF LIFE', 'BIOLOGICAL CLASSIFICATION',
                        'SYNTHETIC FIBRES AND PLASTICS', 'ANIMAL KINGDOM', 'ECOSYSTEM',
                        'STRUCTURAL ORGANIZATION IN ANIMALS', 'HALOALKANES AND HALOARENES',
                        'EVOLUTION', 'DIGESTION AND ABSORPTION', 'THE LIVING WORLD',
                        'HEREDITY AND EVOLUTION', 'BREATHING AND EXCHANGE OF GASES',
                        'NATURAL RESOURCES', 'THE SOLID STATE', 'SOIL',
                        'DUAL NATURE OF RADIATION AND MATTER',
                        'WEATHER, CLIMATE AND ADAPTATIONS OF ANIMALS TO CLIMATE',
                        'PLANT KINGDOM', 'WATER: A PRECIOUS RESOURCE',
                        'DIRECT AND INVERSE PROPORTIONS', 'FORESTS: OUR LIFELINE',
                        'PLANT GROWTH AND DEVELOPMENT', 'PHOTOSYNTHESIS IN HIGHER PLANTS',
                        'REPRODUCTION IN ORGANISMS', 'POLLUTION OF AIR AND WATER',
                        'HUMAN REPRODUCTION', 'MINERAL NUTRITION',
                        'NEURAL CONTROL AND COORDINATION', 'SOME NATURAL PHENOMENA',
                        'WASTE WATER STORY', 'COMMUNICATION SYSTEMS',
                        'SUSTAINABLE MANAGEMENT OF NATURAL RESOURCES', 'OUR ENVIRONMENT',
                        'RESPIRATION IN ORGANISMS',
                        'SEXUAL REPRODUCTION IN FLOWERING PLANTS',
                        'CELL — STRUCTURE AND FUNCTIONS', 'MATTER IN OUR SURROUNDINGS',
                        'BIODIVERSITY AND CONSERVATION', 'COMPONENTS OF FOOD',
                        'CONTROL AND COORDINATION', 'CONSERVATION OF PLANTS AND ANIMALS',
                        'TRANSPORTATION IN ANIMALS AND PLANTS',
                        'REACHING THE AGE OF ADOLESCENCE', 'REPRODUCTION IN ANIMALS',
                        'HUMAN HEALTH AND DISEASE', 'NUTRTION IN ANIMALS']),
    }