C31232233133313221211113313331333132313331333133313331333133313331333232223111   >>    C3123223313331322121111331333133313231333133313331333133313331333133323222311   <<    C31232233133313221211113313331333132313331333133313331333133313331333232223113   >>      C31232233133313221211113313331333132313331333133313331333133313331333232223112   >>