C111113331333132322331333133313331311331323133112111133232212121   >>    C11111333133313232233133313331333131133132313311211113323221212   <<    C111113331333132322331333133313331311331323133112111133232212123   >>      C111113331333132322331333133313331311331323133112111133232212122   >>