C11112331312111112111133133313331333132212111111221123231323231   >>    C1111233131211111211113313331333133313221211111122112323132323   <<    C11112331312111112111133133313331333132212111111221123231323233   >>      C11112331312111112111133133313331333132212111111221123231323232   >>