C111123313331323113313331323133313331311331311331333133112111133112113211   >>    C11112331333132311331333132313331333131133131133133313311211113311211321   <<    C111123313331323113313331323133313331311331311331333133112111133112113213   >>      C111123313331323113313331323133313331311331311331333133112111133112113212   >>