C313212111113331323312111133133313331333131212111133133313133313223322321311231   >>    C31321211111333132331211113313331333133313121211113313331313331322332232131123   <<    C313212111113331323312111133133313331333131212111133133313133313223322321311233   >>      C313212111113331323312111133133313331333131212111133133313133313223322321311232   >>