C313212111133131211331333133313331333133311233133313232213133221   >>    C31321211113313121133133313331333133313331123313331323221313322   <<    C313212111133131211331333133313331333133311233133313232213133223   >>      C313212111133131211331333133313331333133311233133313232213133222   >>