The argument lperm is expected to be a permutation in list notation. This means that lperm is a list whose ith element is the image of i under the permutation. The permutation is returned in disjoint cycle notation.

word is expected to be a word in the generator names of pg. In other words, word is a list whose elements are generator names and/or their inverses. The product represented by word is computed and returned in disjoint cycle notation.

A list is returned whose ith element is the image of i under perm, for .