English verb conjugation
CAN TRILL

Regular verb: trill - trilled - trilled

Affirmation

Simple form	V-ing form
I can trill you can trill he can trill we can trill you can trill they can trill	I can be trilling you can be trilling he 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 he 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 he 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 can't trill you can't trill he can't trill we can't trill you can't trill they can't trill	I can't be trilling you can't be trilling he can't be trilling we can't be trilling you can't be trilling they can't be trilling
Perfect	V-ing perfect
I can't have trilled you can't have trilled he can't have trilled we can't have trilled you can't have trilled they can't have trilled	I can't have been trilling you can't have been trilling he can't have been trilling we can't have been trilling you can't have been trilling they can't have been trilling

Interrogative form

Simple form	V-ing form
can I trill? can you trill? can he trill? can we trill? can you trill? can they trill?	can I be trilling? can you be trilling? can he 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 he 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 he 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't I trill? can't you trill? can't he trill? can't we trill? can't you trill? can't they trill?	can't I be trilling? can't you be trilling? can't he be trilling? can't we be trilling? can't you be trilling? can't they be trilling?
Perfect	V-ing perfect
can't I have trilled? can't you have trilled? can't he have trilled? can't we have trilled? can't you have trilled? can't they have trilled?	can't I have been trilling? can't you have been trilling? can't he have been trilling? can't we have been trilling? can't you have been trilling? can't they have been trilling?