C31232233133313221211113313331333133313112113231323133313222221   >>    C3123223313331322121111331333133313331311211323132313331322222   <<    C31232233133313221211113313331333133313112113231323133313222223   >>      C31232233133313221211113313331333133313112113231323133313222222   >>