C1111133313331323223313331333133313331323131313121111331323331323311232313121   >>    C111113331333132322331333133313331333132313131312111133132333132331123231312   <<    C1111133313331323223313331333133313331323131313121111331323331323311232313123   >>      C1111133313331323223313331333133313331323131313121111331323331323311232313122   >>