C313212111133131211331333133313331333133313231333133313331333133112323223321   >>    C31321211113313121133133313331333133313331323133313331333133313311232322332   <<    C313212111133131211331333133313331333133313231333133313331333133112323223323   >>      C313212111133131211331333133313331333133313231333133313331333133112323223322   >>