C1111133313331323223313331333133313311211111211331333131133131312113313221211   >>    C111113331333132322331333133313331331121111121133133313113313131211331322121   <<    C1111133313331323223313331333133313311211111211331333131133131312113313221213   >>      C1111133313331323223313331333133313311211111211331333131133131312113313221212   >>