C1111133313331323223313331333133313112331322121111331311331311233112323221   >>    C111113331333132322331333133313331311233132212111133131133131123311232322   <<    C1111133313331323223313331333133313112331322121111331311331311233112323223   >>      C1111133313331323223313331333133313112331322121111331311331311233112323222   >>