Two sorts of reason are worth examining. On the one hand, it is sometimes argued that sameness of proper parts is not sufficient for identity. For example, it is argued that: (i) two words can be made up of the same letters (Hempel 1953: 110; Rescher 1955: 10), two tunes of the same notes (Rosen and Dorr 2002: 154), and so on; or (ii) the same flowers can compose a nice bunch or a scattered bundle, depending on the arrangements of the individual flowers (Eberle 1970: §2.10); or (iii) two groups