English verb conjugation
COULD SANDBAG

Regular verb: sandbag - sandbagged - sandbagged

Affirmation

Simple form	V-ing form
I could sandbag you could sandbag he could sandbag we could sandbag you could sandbag they could sandbag	I could be sandbagging you could be sandbagging he could be sandbagging we could be sandbagging you could be sandbagging they could be sandbagging
Perfect	V-ing perfect
I could have sandbagged you could have sandbagged he could have sandbagged we could have sandbagged you could have sandbagged they could have sandbagged	I could have been sandbagging you could have been sandbagging he could have been sandbagging we could have been sandbagging you could have been sandbagging they could have been sandbagging

Negation

Simple form	V-ing form
I could not sandbag you could not sandbag he could not sandbag we could not sandbag you could not sandbag they could not sandbag	I could not be sandbagging you could not be sandbagging he could not be sandbagging we could not be sandbagging you could not be sandbagging they could not be sandbagging
Perfect	V-ing perfect
I could not have sandbagged you could not have sandbagged he could not have sandbagged we could not have sandbagged you could not have sandbagged they could not have sandbagged	I could not have been sandbagging you could not have been sandbagging he could not have been sandbagging we could not have been sandbagging you could not have been sandbagging they could not have been sandbagging

Interrogative form

Simple form	V-ing form
could I sandbag? could you sandbag? could he sandbag? could we sandbag? could you sandbag? could they sandbag?	could I be sandbagging? could you be sandbagging? could he be sandbagging? could we be sandbagging? could you be sandbagging? could they be sandbagging?
Perfect	V-ing perfect
could I have sandbagged? could you have sandbagged? could he have sandbagged? could we have sandbagged? could you have sandbagged? could they have sandbagged?	could I have been sandbagging? could you have been sandbagging? could he have been sandbagging? could we have been sandbagging? could you have been sandbagging? could they have been sandbagging?

Interro-negative form

Simple form	V-ing form
could I not sandbag? could you not sandbag? could he not sandbag? could we not sandbag? could you not sandbag? could they not sandbag?	could I not be sandbagging? could you not be sandbagging? could he not be sandbagging? could we not be sandbagging? could you not be sandbagging? could they not be sandbagging?
Perfect	V-ing perfect
could I not have sandbagged? could you not have sandbagged? could he not have sandbagged? could we not have sandbagged? could you not have sandbagged? could they not have sandbagged?	could I not have been sandbagging? could you not have been sandbagging? could he not have been sandbagging? could we not have been sandbagging? could you not have been sandbagging? could they not have been sandbagging?