## Enumeration of reversible rules

for the smaller combinations of

kandrit is possible to make an exhaustive survey, to find which rules are reversible, and to ascertain the reversing rule. Given the fact that the neighborhood length of a pair of inverses does not have to be the same, the surveys performed in the ancestor menu will not necessarily be complete.

Harold V. McIntosh

E-mail:mcintosh@servidor.unam.mx