English verb conjugation COULD SAP

Regular verb: sap - sapped - sapped

Affirmation

Simple form

I could sap
you could sap
he could sap
we could sap
you could sap
they could sap

V-ing form

I could be sapping
you could be sapping
he could be sapping
we could be sapping
you could be sapping
they could be sapping

Perfect

I could have sapped
you could have sapped
he could have sapped
we could have sapped
you could have sapped
they could have sapped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I sap?
could you sap?
could he sap?
could we sap?
could you sap?
could they sap?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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