C313212111133131211331333133313331333133312111133133313331333133313232213113121   >>    C31321211113313121133133313331333133313331211113313331333133313331323221311312   <<    C313212111133131211331333133313331333133312111133133313331333133313232213113123   >>      C313212111133131211331333133313331333133312111133133313331333133313232213113122   >>