C111123313331323113313331323133313331311331311331333132322231231   >>    C11112331333132311331333132313331333131133131133133313232223123   <<    C111123313331323113313331323133313331311331311331333132322231233   >>      C111123313331323113313331323133313331311331311331333132322231232   >>