C11112331312111112111133133313331333132323133313331333133323223313112121   >>    C1111233131211111211113313331333133313232313331333133313332322331311212   <<    C11112331312111112111133133313331333132323133313331333133323223313112123   >>      C11112331312111112111133133313331333132323133313331333133323223313112122   >>