from math import *

print "sixteen is " , (4*4)
print "seventeen is " , (factorial(4)-4)-(((4*4)-4)/4)  # or ((4*4)+(4/4))
print "eighteen is " , (((4+4)/4)+(4*4))
print "nineteen is " , ((((4*4)-4)/4)+(4*4))
print "twenty is " , (factorial(4)-4)
print "twenty one is " , (4*4)+((factorial(4)-4)/4)




# ouput:

# sixteen is  16
# seventeen is  17
# eighteen is  18
# nineteen is  19
# twenty is  20
# twentyone is  21
