English verb conjugation
COULD SANDBAG

Regular verb: sandbag - sandbagged - sandbagged

Affirmation

Simple form	V-ing form
I could sandbag you could sandbag she could sandbag we could sandbag you could sandbag they could sandbag	I could be sandbagging you could be sandbagging she 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 she 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 she 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 couldn't sandbag you couldn't sandbag she couldn't sandbag we couldn't sandbag you couldn't sandbag they couldn't sandbag	I couldn't be sandbagging you couldn't be sandbagging she couldn't be sandbagging we couldn't be sandbagging you couldn't be sandbagging they couldn't be sandbagging
Perfect	V-ing perfect
I couldn't have sandbagged you couldn't have sandbagged she couldn't have sandbagged we couldn't have sandbagged you couldn't have sandbagged they couldn't have sandbagged	I couldn't have been sandbagging you couldn't have been sandbagging she couldn't have been sandbagging we couldn't have been sandbagging you couldn't have been sandbagging they couldn't have been sandbagging

Interrogative form

Simple form	V-ing form
could I sandbag? could you sandbag? could she sandbag? could we sandbag? could you sandbag? could they sandbag?	could I be sandbagging? could you be sandbagging? could she 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 she 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 she 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
couldn't I sandbag? couldn't you sandbag? couldn't she sandbag? couldn't we sandbag? couldn't you sandbag? couldn't they sandbag?	couldn't I be sandbagging? couldn't you be sandbagging? couldn't she be sandbagging? couldn't we be sandbagging? couldn't you be sandbagging? couldn't they be sandbagging?
Perfect	V-ing perfect
couldn't I have sandbagged? couldn't you have sandbagged? couldn't she have sandbagged? couldn't we have sandbagged? couldn't you have sandbagged? couldn't they have sandbagged?	couldn't I have been sandbagging? couldn't you have been sandbagging? couldn't she have been sandbagging? couldn't we have been sandbagging? couldn't you have been sandbagging? couldn't they have been sandbagging?