The output of the first step is the five sub-lists containing words and the corresponding tags. Note that not all sub-lists do have to contain words, in fact in most cases (general simple names without any alternative names) the complete name is stored in sub-list 0.
The following is the output (words and tags) from the first step using the example input shown above.
0 (potential given names): [`del'] [`PR'] 1 (potential alternative given names): [`van', `peter'] [`PR', `GM'] 2 (potential surnames): [`miller', `,'] [`UN', `CO'] 3 (potential alternative surnames): [] [] 4 (potential second alternative surnames): [] []