#!/usr/bin/env python3
#list
print(1)
for value in ['a', 'b', 'c']:
    print(value)
print(2)
print('----range----')
#range
for value in range(10):
    print(value)
print('----while----')
#while
value = 0
while value<10:
    print(value)
    value = value+1
