C111112111133131121133133313331333133313331323133313331323233231121   >>    C11111211113313112113313331333133313331333132313331333132323323112   <<    C111112111133131121133133313331333133313331323133313331323233231123   >>      C111112111133131121133133313331333133313331323133313331323233231122   >>