C111112111133131121133133313331333133313331323133313331333131133132331222121   >>    C11111211113313112113313331333133313331333132313331333133313113313233122212   <<    C111112111133131121133133313331333133313331323133313331333131133132331222123   >>      C111112111133131121133133313331333133313331323133313331333131133132331222122   >>