C313212111133131211331333133313232233132313231211113313231333132213232321   >>    C31321211113313121133133313331323223313231323121111331323133313221323232   <<    C313212111133131211331333133313232233132313231211113313231333132213232323   >>      C313212111133131211331333133313232233132313231211113313231333132213232322   >>