C111112111133131121133133313331312111133132213331323223313231121   >>    C11111211113313112113313331333131211113313221333132322331323112   <<    C111112111133131121133133313331312111133132213331323223313231123   >>      C111112111133131121133133313331312111133132213331323223313231122   >>