C11112331312111112111133133313331311331323223323133313233232311   >>    C1111233131211111211113313331333131133132322332313331323323231   <<    C11112331312111112111133133313331311331323223323133313233232313   >>      C11112331312111112111133133313331311331323223323133313233232312   >>