English verb conjugation
CAN SHRILL

Regular verb: shrill - shrilled - shrilled

Affirmation

Simple form	V-ing form
I can shrill you can shrill she can shrill we can shrill you can shrill they can shrill	I can be shrilling you can be shrilling she can be shrilling we can be shrilling you can be shrilling they can be shrilling
Perfect	V-ing perfect
I can have shrilled you can have shrilled she can have shrilled we can have shrilled you can have shrilled they can have shrilled	I can have been shrilling you can have been shrilling she can have been shrilling we can have been shrilling you can have been shrilling they can have been shrilling

Negation

Simple form	V-ing form
I cannot shrill you cannot shrill she cannot shrill we cannot shrill you cannot shrill they cannot shrill	I cannot be shrilling you cannot be shrilling she cannot be shrilling we cannot be shrilling you cannot be shrilling they cannot be shrilling
Perfect	V-ing perfect
I cannot have shrilled you cannot have shrilled she cannot have shrilled we cannot have shrilled you cannot have shrilled they cannot have shrilled	I cannot have been shrilling you cannot have been shrilling she cannot have been shrilling we cannot have been shrilling you cannot have been shrilling they cannot have been shrilling

Interrogative form

Simple form	V-ing form
can I shrill? can you shrill? can she shrill? can we shrill? can you shrill? can they shrill?	can I be shrilling? can you be shrilling? can she be shrilling? can we be shrilling? can you be shrilling? can they be shrilling?
Perfect	V-ing perfect
can I have shrilled? can you have shrilled? can she have shrilled? can we have shrilled? can you have shrilled? can they have shrilled?	can I have been shrilling? can you have been shrilling? can she have been shrilling? can we have been shrilling? can you have been shrilling? can they have been shrilling?

Interro-negative form

Simple form	V-ing form
can I not shrill? can you not shrill? can she not shrill? can we not shrill? can you not shrill? can they not shrill?	can I not be shrilling? can you not be shrilling? can she not be shrilling? can we not be shrilling? can you not be shrilling? can they not be shrilling?
Perfect	V-ing perfect
can I not have shrilled? can you not have shrilled? can she not have shrilled? can we not have shrilled? can you not have shrilled? can they not have shrilled?	can I not have been shrilling? can you not have been shrilling? can she not have been shrilling? can we not have been shrilling? can you not have been shrilling? can they not have been shrilling?