C313212111133131211331333133313331333133311233133313232211313121   >>    C31321211113313121133133313331333133313331123313331323221131312   <<    C313212111133131211331333133313331333133311233133313232211313123   >>      C313212111133131211331333133313331333133311233133313232211313122   >>