C313212111113331323312111133133313331333133313331333133313331333131133233231321   >>    C31321211111333132331211113313331333133313331333133313331333133313113323323132   <<    C313212111113331323312111133133313331333133313331333133313331333131133233231323   >>      C313212111113331323312111133133313331333133313331333133313331333131133233231322   >>