C31232233133313221211113313331333131211113313231333133323223231   >>    C3123223313331322121111331333133313121111331323133313332322323   <<    C31232233133313221211113313331333131211113313231333133323223233   >>      C31232233133313221211113313331333131211113313231333133323223232   >>