C313212111133131211331333133313232233132313231211113313231333132211211   >>    C31321211113313121133133313331323223313231323121111331323133313221121   <<    C313212111133131211331333133313232233132313231211113313231333132211213   >>      C313212111133131211331333133313232233132313231211113313231333132211212   >>