C313212111133131211331333133313331333133313331333133313331333131322121121   >>    C31321211113313121133133313331333133313331333133313331333133313132212112   <<    C313212111133131211331333133313331333133313331333133313331333131322121123   >>      C313212111133131211331333133313331333133313331333133313331333131322121122   >>