C31232233133313221211113313331333132313331333133313121111331333132312111   >>    C3123223313331322121111331333133313231333133313331312111133133313231211   <<    C31232233133313221211113313331333132313331333133313121111331333132312113   >>      C31232233133313221211113313331333132313331333133313121111331333132312112   >>