missing past tenses/participles for some verbs

[jdee]

The WordNet irregular verb inflections in verb.exc do not tell you what is a present-tense form, what a past tense, what a participle and so on. It's difficult morphologically to determine if an existing irregular verb inflection is a past tense or participle. Consider words like was/were/been (for be), bent (for bend), done (for do) and so on. Most, perhaps all, English verbs that are irregular have irregular past tenses or participles, and that holds for most of the exceptions in WordNet. Hence, Dubsar does not attempt to build a regular past tense for any verb that has any irregular inflection at all. It must build some regular forms for even the most irregular words. WordNet provides all inflected forms of be other than being, which Dubsar produces. Fortunately, present participles are exceedingly regular.

But some verbs have only a slightly irregular present participle listed in the verb.exc file, for example, and hence do not list a past tense in Dubsar. Those are few. But there are plenty of cases where a verb ends in a short syllable with l, for example, and has one past form listed as an irregular. For example, travel is listed with the conjugations: traveling, travelled, travelling, travels. The valid inflection traveled is missing because it was not listed among the irregular inflections, and Dubsar did not build it since there were already irregular forms. In this case, in fact, there was already the irregular past tense travelled.

Then there are verbs like address, which lists the inflections addresses, addressing, addrest, but not addressed, because the irregular addrest was listed.

This question requires a bit of review.