C11112331312111112111133133313331333132323133313331311222113231   >>    C1111233131211111211113313331333133313232313331333131122211323   <<    C11112331312111112111133133313331333132323133313331311222113233   >>      C11112331312111112111133133313331333132323133313331311222113232   >>