C31232233133313221211113313331333133313113311331333133312223231   >>    C3123223313331322121111331333133313331311331133133313331222323   <<    C31232233133313221211113313331333133313113311331333133312223233   >>      C31232233133313221211113313331333133313113311331333133312223232   >>