C11111211113313112113313331333133313331333132212111133131313232311   >>    C1111121111331311211331333133313331333133313221211113313131323231   <<    C11111211113313112113313331333133313331333132212111133131313232313   >>      C11111211113313112113313331333133313331333132212111133131313232312   >>