C111123313331323113313331333133313331323132311331323131133231121   >>    C11112331333132311331333133313331333132313231133132313113323112   <<    C111123313331323113313331333133313331323132311331323131133231123   >>      C111123313331323113313331333133313331323132311331323131133231122   >>