Celinese: Verbal Categories: The Morphological Imperative: Second singular and second plural
The imperative is formed by removing the present infinitive ending (-í) and then adding the imperative infinitive (-ú) in its place. Fú, from fí, means 'to have to do' and 'I must do'. Personal endings like those of every other tense and mood are added to this infinitive that apply not only to the 2nd person but to all - byrús (walk! or you must walk!), byrúot (ye must walk!), byrún (they must walk), byrúm (we must walk.)
