C1111133313331323223313331333133313331333232111211113313113313222221   >>    C111113331333132322331333133313331333133323211121111331311331322222   <<    C1111133313331323223313331333133313331333232111211113313113313222223   >>      C1111133313331323223313331333133313331333232111211113313113313222222   >>