English verb conjugation COULD PROP

Regular verb: prop - propped - propped

Affirmation

Simple form

I could prop
you could prop
he could prop
we could prop
you could prop
they could prop

V-ing form

I could be propping
you could be propping
he could be propping
we could be propping
you could be propping
they could be propping

Perfect

I could have propped
you could have propped
he could have propped
we could have propped
you could have propped
they could have propped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I prop?
could you prop?
could he prop?
could we prop?
could you prop?
could they prop?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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