- the conditional is not shown, as it is completely predictable based on the future tense form (see the grammar sections on the future and conditional tenses for more information);
- the past subjunctive is similarly predictable based on the preterite, so only the latter is shown;
- only a single compound tense is shown, namely the perfect (he hecho etc); other compound tenses, e.g. the pluperfect (había hecho), are predictable based on the perfect.
Any suggestions or corrections to the verb conjugations displayed either within the dictionary entries or within the verb tables are welcome on this blog entry.