Accents on Imperatives

Hi all,

Are there any rules for accenting imperatives? I can’t see a pattern in the way they are accented (such as φίλει where does the acute accent on the iota come from?)

Thanks,
Deccius

Except for a very few aorist imperatives which have an accent on the final syllable (εἰπέ, λαβέ), the accenting rule for imperatives is the same as the rest of the verbal system, recessive.

Remember the uncontracted forms:

φίλεεφίλει
φιλέειφιλεῖ.