C31232233133313221211113313331333131211113313231333133313123132232311   >>    C3123223313331322121111331333133313121111331323133313331312313223231   <<    C31232233133313221211113313331333131211113313231333133313123132232313   >>      C31232233133313221211113313331333131211113313231333133313123132232312   >>