C313212111133131211331333133313232233132313231211113313231232323321   >>    C31321211113313121133133313331323223313231323121111331323123232332   <<    C313212111133131211331333133313232233132313231211113313231232323323   >>      C313212111133131211331333133313232233132313231211113313231232323322   >>