#!/usr/bin/env python3 C=list(range(7)) S0={(3,6),(5,1),(0,2),(5,0),(0,3),(3,1),(4,1),(1,5)} T0={(5,2),(2,3),(0,1),(2,0),(5,4),(5,6)} def norm(st): d={} for i in C: r=st[i] if r not in d:d[r]=i if i