C111112111133131121133133313331333133313331323133313331333131133132231211231   >>    C11111211113313112113313331333133313331333132313331333133313113313223121123   <<    C111112111133131121133133313331333133313331323133313331333131133132231211233   >>      C111112111133131121133133313331333133313331323133313331333131133132231211232   >>