C31232233133313221211113313331333131211113313231333133112121311   >>    C3123223313331322121111331333133313121111331323133313311212131   <<    C31232233133313221211113313331333131211113313231333133112121313   >>      C31232233133313221211113313331333131211113313231333133112121312   >>