# -*- coding: utf-8 -*-
def move(n, a, b, c):
    if n == 1:
        print('{a} >> {c}'.format(a=a,c=c))
        return
    move(n-1,a,c,b)
    print('{a} >> {c}'.format(a=a,c=c))
    move(n-1,b,a,c)
if __name__ == '__main__':
    move(3,'A','B','C')