I could bag you could bag she could bag we could bag you could bag they could bag
V-ing form
I could be bagging you could be bagging she could be bagging we could be bagging you could be bagging they could be bagging
Perfect
I could have bagged you could have bagged she could have bagged we could have bagged you could have bagged they could have bagged
V-ing perfect
I could have been bagging you could have been bagging she could have been bagging we could have been bagging you could have been bagging they could have been bagging
Negation
Simple form
I could not bag you could not bag she could not bag we could not bag you could not bag they could not bag
V-ing form
I could not be bagging you could not be bagging she could not be bagging we could not be bagging you could not be bagging they could not be bagging
Perfect
I could not have bagged you could not have bagged she could not have bagged we could not have bagged you could not have bagged they could not have bagged
V-ing perfect
I could not have been bagging you could not have been bagging she could not have been bagging we could not have been bagging you could not have been bagging they could not have been bagging
Interrogative form
Simple form
could I bag? could you bag? could she bag? could we bag? could you bag? could they bag?
V-ing form
could I be bagging? could you be bagging? could she be bagging? could we be bagging? could you be bagging? could they be bagging?
Perfect
could I have bagged? could you have bagged? could she have bagged? could we have bagged? could you have bagged? could they have bagged?
V-ing perfect
could I have been bagging? could you have been bagging? could she have been bagging? could we have been bagging? could you have been bagging? could they have been bagging?
Interro-negative form
Simple form
could I not bag? could you not bag? could she not bag? could we not bag? could you not bag? could they not bag?
V-ing form
could I not be bagging? could you not be bagging? could she not be bagging? could we not be bagging? could you not be bagging? could they not be bagging?
Perfect
could I not have bagged? could you not have bagged? could she not have bagged? could we not have bagged? could you not have bagged? could they not have bagged?
V-ing perfect
could I not have been bagging? could you not have been bagging? could she not have been bagging? could we not have been bagging? could you not have been bagging? could they not have been bagging?