C31232233133313221211113313331333131211113313231333133112113313232211   >>    C3123223313331322121111331333133313121111331323133313311211331323221   <<    C31232233133313221211113313331333131211113313231333133112113313232213   >>      C31232233133313221211113313331333131211113313231333133112113313232212   >>