English verb conjugation
COULD DELIVER

Regular verb: deliver - delivered - delivered

Affirmation

Simple form	V-ing form
I could deliver you could deliver he could deliver we could deliver you could deliver they could deliver	I could be delivering you could be delivering he could be delivering we could be delivering you could be delivering they could be delivering
Perfect	V-ing perfect
I could have delivered you could have delivered he could have delivered we could have delivered you could have delivered they could have delivered	I could have been delivering you could have been delivering he could have been delivering we could have been delivering you could have been delivering they could have been delivering

Negation

Simple form	V-ing form
I could not deliver you could not deliver he could not deliver we could not deliver you could not deliver they could not deliver	I could not be delivering you could not be delivering he could not be delivering we could not be delivering you could not be delivering they could not be delivering
Perfect	V-ing perfect
I could not have delivered you could not have delivered he could not have delivered we could not have delivered you could not have delivered they could not have delivered	I could not have been delivering you could not have been delivering he could not have been delivering we could not have been delivering you could not have been delivering they could not have been delivering

Interrogative form

Simple form	V-ing form
could I deliver? could you deliver? could he deliver? could we deliver? could you deliver? could they deliver?	could I be delivering? could you be delivering? could he be delivering? could we be delivering? could you be delivering? could they be delivering?
Perfect	V-ing perfect
could I have delivered? could you have delivered? could he have delivered? could we have delivered? could you have delivered? could they have delivered?	could I have been delivering? could you have been delivering? could he have been delivering? could we have been delivering? could you have been delivering? could they have been delivering?

Interro-negative form

Simple form	V-ing form
could I not deliver? could you not deliver? could he not deliver? could we not deliver? could you not deliver? could they not deliver?	could I not be delivering? could you not be delivering? could he not be delivering? could we not be delivering? could you not be delivering? could they not be delivering?
Perfect	V-ing perfect
could I not have delivered? could you not have delivered? could he not have delivered? could we not have delivered? could you not have delivered? could they not have delivered?	could I not have been delivering? could you not have been delivering? could he not have been delivering? could we not have been delivering? could you not have been delivering? could they not have been delivering?