English verb conjugation
COULD STILL STILL

Regular verb: still still - still stilled - still stilled

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could still still you could still still she could still still we could still still you could still still they could still still	I could be still stilling you could be still stilling she could be still stilling we could be still stilling you could be still stilling they could be still stilling
Perfect	V-ing perfect
I could have still stilled you could have still stilled she could have still stilled we could have still stilled you could have still stilled they could have still stilled	I could have been still stilling you could have been still stilling she could have been still stilling we could have been still stilling you could have been still stilling they could have been still stilling

Negation

Simple form	V-ing form
I couldn't still still you couldn't still still she couldn't still still we couldn't still still you couldn't still still they couldn't still still	I couldn't be still stilling you couldn't be still stilling she couldn't be still stilling we couldn't be still stilling you couldn't be still stilling they couldn't be still stilling
Perfect	V-ing perfect
I couldn't have still stilled you couldn't have still stilled she couldn't have still stilled we couldn't have still stilled you couldn't have still stilled they couldn't have still stilled	I couldn't have been still stilling you couldn't have been still stilling she couldn't have been still stilling we couldn't have been still stilling you couldn't have been still stilling they couldn't have been still stilling

Interrogative form

Simple form	V-ing form
could I still still? could you still still? could she still still? could we still still? could you still still? could they still still?	could I be still stilling? could you be still stilling? could she be still stilling? could we be still stilling? could you be still stilling? could they be still stilling?
Perfect	V-ing perfect
could I have still stilled? could you have still stilled? could she have still stilled? could we have still stilled? could you have still stilled? could they have still stilled?	could I have been still stilling? could you have been still stilling? could she have been still stilling? could we have been still stilling? could you have been still stilling? could they have been still stilling?

Interro-negative form

Simple form	V-ing form
couldn't I still still? couldn't you still still? couldn't she still still? couldn't we still still? couldn't you still still? couldn't they still still?	couldn't I be still stilling? couldn't you be still stilling? couldn't she be still stilling? couldn't we be still stilling? couldn't you be still stilling? couldn't they be still stilling?
Perfect	V-ing perfect
couldn't I have still stilled? couldn't you have still stilled? couldn't she have still stilled? couldn't we have still stilled? couldn't you have still stilled? couldn't they have still stilled?	couldn't I have been still stilling? couldn't you have been still stilling? couldn't she have been still stilling? couldn't we have been still stilling? couldn't you have been still stilling? couldn't they have been still stilling?