C1111133313331323223313331333133313112331322121111331313311232321   >>    C111113331333132322331333133313331311233132212111133131331123232   <<    C1111133313331323223313331333133313112331322121111331313311232323   >>      C1111133313331323223313331333133313112331322121111331313311232322   >>