# if

a = 1

if a == 1:
    print('a==1')
    # space 2 or space 4 or tab 1
    
    
if a == 2:
    print('a == 2')
else :
    print('a != 2')
    
    
b = 3

if b == 1:
    print('b == 1')
elif b == 2:
    print('b == 2')
elif b == 3:
    print('b == 3')
else :
    print('b ??')