C111112111133131121133133313331333133313331323133313331333133313231323231121   >>    C11111211113313112113313331333133313331333132313331333133313331323132323112   <<    C111112111133131121133133313331333133313331323133313331333133313231323231123   >>      C111112111133131121133133313331333133313331323133313331333133313231323231122   >>