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