C31232233133313221211113313331333132313331322121111123121111121111113313231211   >>    C3123223313331322121111331333133313231333132212111112312111112111111331323121   <<    C31232233133313221211113313331333132313331322121111123121111121111113313231213   >>      C31232233133313221211113313331333132313331322121111123121111121111113313231212   >>