x = ['ab', 'cd']
for i in x:
i.upper()
print(x)i = 1
while True:
if i%3 == 0:
break
print(i)
i+=1m = 28
n = 5
print(m // n)m = 33
if m > 33:
print('A')
elif m == 30:
print('B')
else:
print('C')