# -*- coding: utf-8 -*-
def move(n, a, b, c):
    if n == 1:
        print("# %s --> %s" % (a, c))
    else:
        move(n-1, a, c, b)
        move(1, a, b, c)
        move(n-1, b, a, c)

move(3, 'A', 'B', 'C')