C1111133313331323223313331333133313331323131211111133131123322321   >>    C111113331333132322331333133313331333132313121111113313112332232   <<    C1111133313331323223313331333133313331323131211111133131123322323   >>      C1111133313331323223313331333133313331323131211111133131123322322   >>