C111112111133131121133133313331323133313221131211113313331311331323133313221221   >>    C11111211113313112113313331333132313331322113121111331333131133132313331322122   <<    C111112111133131121133133313331323133313221131211113313331311331323133313221223   >>      C111112111133131121133133313331323133313221131211113313331311331323133313221222   >>