C1111133313331323223313331333133313331323131211113313112133313332311   >>    C111113331333132322331333133313331333132313121111331311213331333231   <<    C1111133313331323223313331333133313331323131211113313112133313332313   >>      C1111133313331323223313331333133313331323131211113313112133313332312   >>