C111112111133131121133133313331311331333131122112323133313223313231232231111   >>    C11111211113313112113313331333131133133313112211232313331322331323123223111   <<    C111112111133131121133133313331311331333131122112323133313223313231232231113   >>      C111112111133131121133133313331311331333131122112323133313223313231232231112   >>