C31232233133313221211113313331333133313331212111133121111123221221   >>    C3123223313331322121111331333133313331333121211113312111112322122   <<    C31232233133313221211113313331333133313331212111133121111123221223   >>      C31232233133313221211113313331333133313331212111133121111123221222   >>