C313212111113331323312111133133313331333133313331333133313113313113313233121221   >>    C31321211111333132331211113313331333133313331333133313331311331311331323312122   <<    C313212111113331323312111133133313331333133313331333133313113313113313233121223   >>      C313212111113331323312111133133313331333133313331333133313113313113313233121222   >>