C31232233133313221211113313331333133313331212111112111133121111113313231311211   >>    C3123223313331322121111331333133313331333121211111211113312111111331323131121   <<    C31232233133313221211113313331333133313331212111112111133121111113313231311213   >>      C31232233133313221211113313331333133313331212111112111133121111113313231311212   >>