C11111333133313232233133313331333133112111112113313331311331323231221   >>    C1111133313331323223313331333133313311211111211331333131133132323122   <<    C11111333133313232233133313331333133112111112113313331311331323231223   >>      C11111333133313232233133313331333133112111112113313331311331323231222   >>