C31232233133313221211113313331333131211113313231333132232111211   >>    C3123223313331322121111331333133313121111331323133313223211121   <<    C31232233133313221211113313331333131211113313231333132232111213   >>      C31232233133313221211113313331333131211113313231333132232111212   >>