C313212111113331323312111133133313331333133313331333133311233133312121   >>    C31321211111333132331211113313331333133313331333133313331123313331212   <<    C313212111113331323312111133133313331333133313331333133311233133312123   >>      C313212111113331323312111133133313331333133313331333133311233133312122   >>