C313212111133131211331333133313331333133313231323133313331333133313331322312121   >>    C31321211113313121133133313331333133313331323132313331333133313331333132231212   <<    C313212111133131211331333133313331333133313231323133313331333133313331322312123   >>      C313212111133131211331333133313331333133313231323133313331333133313331322312122   >>