English verb conjugation
CAN TRILL

Regular verb: trill - trilled - trilled

Affirmation

Simple form	V-ing form
I can trill you can trill she can trill we can trill you can trill they can trill	I can be trilling you can be trilling she can be trilling we can be trilling you can be trilling they can be trilling
Perfect	V-ing perfect
I can have trilled you can have trilled she can have trilled we can have trilled you can have trilled they can have trilled	I can have been trilling you can have been trilling she can have been trilling we can have been trilling you can have been trilling they can have been trilling

Negation

Simple form	V-ing form
I cannot trill you cannot trill she cannot trill we cannot trill you cannot trill they cannot trill	I cannot be trilling you cannot be trilling she cannot be trilling we cannot be trilling you cannot be trilling they cannot be trilling
Perfect	V-ing perfect
I cannot have trilled you cannot have trilled she cannot have trilled we cannot have trilled you cannot have trilled they cannot have trilled	I cannot have been trilling you cannot have been trilling she cannot have been trilling we cannot have been trilling you cannot have been trilling they cannot have been trilling

Interrogative form

Simple form	V-ing form
can I trill? can you trill? can she trill? can we trill? can you trill? can they trill?	can I be trilling? can you be trilling? can she be trilling? can we be trilling? can you be trilling? can they be trilling?
Perfect	V-ing perfect
can I have trilled? can you have trilled? can she have trilled? can we have trilled? can you have trilled? can they have trilled?	can I have been trilling? can you have been trilling? can she have been trilling? can we have been trilling? can you have been trilling? can they have been trilling?

Interro-negative form

Simple form	V-ing form
can I not trill? can you not trill? can she not trill? can we not trill? can you not trill? can they not trill?	can I not be trilling? can you not be trilling? can she not be trilling? can we not be trilling? can you not be trilling? can they not be trilling?
Perfect	V-ing perfect
can I not have trilled? can you not have trilled? can she not have trilled? can we not have trilled? can you not have trilled? can they not have trilled?	can I not have been trilling? can you not have been trilling? can she not have been trilling? can we not have been trilling? can you not have been trilling? can they not have been trilling?