I could expedite you could expedite she could expedite we could expedite you could expedite they could expedite
V-ing form
I could be expediting you could be expediting she could be expediting we could be expediting you could be expediting they could be expediting
Perfect
I could have expedited you could have expedited she could have expedited we could have expedited you could have expedited they could have expedited
V-ing perfect
I could have been expediting you could have been expediting she could have been expediting we could have been expediting you could have been expediting they could have been expediting
Negation
Simple form
I couldn't expedite you couldn't expedite she couldn't expedite we couldn't expedite you couldn't expedite they couldn't expedite
V-ing form
I couldn't be expediting you couldn't be expediting she couldn't be expediting we couldn't be expediting you couldn't be expediting they couldn't be expediting
Perfect
I couldn't have expedited you couldn't have expedited she couldn't have expedited we couldn't have expedited you couldn't have expedited they couldn't have expedited
V-ing perfect
I couldn't have been expediting you couldn't have been expediting she couldn't have been expediting we couldn't have been expediting you couldn't have been expediting they couldn't have been expediting
Interrogative form
Simple form
could I expedite? could you expedite? could she expedite? could we expedite? could you expedite? could they expedite?
V-ing form
could I be expediting? could you be expediting? could she be expediting? could we be expediting? could you be expediting? could they be expediting?
Perfect
could I have expedited? could you have expedited? could she have expedited? could we have expedited? could you have expedited? could they have expedited?
V-ing perfect
could I have been expediting? could you have been expediting? could she have been expediting? could we have been expediting? could you have been expediting? could they have been expediting?
Interro-negative form
Simple form
couldn't I expedite? couldn't you expedite? couldn't she expedite? couldn't we expedite? couldn't you expedite? couldn't they expedite?
V-ing form
couldn't I be expediting? couldn't you be expediting? couldn't she be expediting? couldn't we be expediting? couldn't you be expediting? couldn't they be expediting?
Perfect
couldn't I have expedited? couldn't you have expedited? couldn't she have expedited? couldn't we have expedited? couldn't you have expedited? couldn't they have expedited?
V-ing perfect
couldn't I have been expediting? couldn't you have been expediting? couldn't she have been expediting? couldn't we have been expediting? couldn't you have been expediting? couldn't they have been expediting?