C31232233133313221211113313331333133313112223313231333132222231   >>    C3123223313331322121111331333133313331311222331323133313222223   <<    C31232233133313221211113313331333133313112223313231333132222233   >>      C31232233133313221211113313331333133313112223313231333132222232   >>