English verb conjugation COULD STILL

Regular verb: still - stilled - stilled

Affirmation

Simple form

I could still
you could still
he could still
we could still
you could still
they could still

V-ing form

I could be stilling
you could be stilling
he could be stilling
we could be stilling
you could be stilling
they could be stilling

Perfect

I could have stilled
you could have stilled
he could have stilled
we could have stilled
you could have stilled
they could have stilled

V-ing perfect

I could have been stilling
you could have been stilling
he could have been stilling
we could have been stilling
you could have been stilling
they could have been stilling

Negation

Simple form

I couldn't still
you couldn't still
he couldn't still
we couldn't still
you couldn't still
they couldn't still

V-ing form

I couldn't be stilling
you couldn't be stilling
he couldn't be stilling
we couldn't be stilling
you couldn't be stilling
they couldn't be stilling

Perfect

I couldn't have stilled
you couldn't have stilled
he couldn't have stilled
we couldn't have stilled
you couldn't have stilled
they couldn't have stilled

V-ing perfect

I couldn't have been stilling
you couldn't have been stilling
he couldn't have been stilling
we couldn't have been stilling
you couldn't have been stilling
they couldn't have been stilling

Interrogative form

Simple form

could I still?
could you still?
could he still?
could we still?
could you still?
could they still?

V-ing form

could I be stilling?
could you be stilling?
could he be stilling?
could we be stilling?
could you be stilling?
could they be stilling?

Perfect

could I have stilled?
could you have stilled?
could he have stilled?
could we have stilled?
could you have stilled?
could they have stilled?

V-ing perfect

could I have been stilling?
could you have been stilling?
could he have been stilling?
could we have been stilling?
could you have been stilling?
could they have been stilling?

Interro-negative form

Simple form

couldn't I still?
couldn't you still?
couldn't he still?
couldn't we still?
couldn't you still?
couldn't they still?

V-ing form

couldn't I be stilling?
couldn't you be stilling?
couldn't he be stilling?
couldn't we be stilling?
couldn't you be stilling?
couldn't they be stilling?

Perfect

couldn't I have stilled?
couldn't you have stilled?
couldn't he have stilled?
couldn't we have stilled?
couldn't you have stilled?
couldn't they have stilled?

V-ing perfect

couldn't I have been stilling?
couldn't you have been stilling?
couldn't he have been stilling?
couldn't we have been stilling?
couldn't you have been stilling?
couldn't they have been stilling?

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