**Table 4. **Summary of relations among meters {1,0} to{0,3} including B, P, S, O, U, R, Sym, and C. Where multiple relations are present, the most restricted form(s) are given (cf. the structure of entailments in Figure 24). For instance, V does not appear, as all V-related pairs are accounted for by more restricted relations (R, C, and Sym) for these meters. All relations have been restricted to exact equivalences (including P). Notice the diagonal axes of C and Sym relations, as well as the clusters of R blocks (as shown earlier in Tables 1, 2, and 3 at the end of the section on vector identity).