C1111133313331323223313331333133313112331322121111331311331311233132211   >>    C111113331333132322331333133313331311233132212111133131133131123313221   <<    C1111133313331323223313331333133313112331322121111331311331311233132213   >>      C1111133313331323223313331333133313112331322121111331311331311233132212   >>