C111123313331323113313331323133313331311331311331333133112111113332223221   >>    C11112331333132311331333132313331333131133131133133313311211111333222322   <<    C111123313331323113313331323133313331311331311331333133112111113332223223   >>      C111123313331323113313331323133313331311331311331333133112111113332223222   >>