C31232233133313221211113313331333132313331333133313121111331333133112312311   >>    C3123223313331322121111331333133313231333133313331312111133133313311231231   <<    C31232233133313221211113313331333132313331333133313121111331333133112312313   >>      C31232233133313221211113313331333132313331333133313121111331333133112312312   >>