English verb conjugation COULD SKULK

Regular verb: skulk - skulked - skulked

Affirmation

Simple form

I could skulk
you could skulk
he could skulk
we could skulk
you could skulk
they could skulk

V-ing form

I could be skulking
you could be skulking
he could be skulking
we could be skulking
you could be skulking
they could be skulking

Perfect

I could have skulked
you could have skulked
he could have skulked
we could have skulked
you could have skulked
they could have skulked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I skulk?
could you skulk?
could he skulk?
could we skulk?
could you skulk?
could they skulk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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