I could expedite you could expedite he could expedite we could expedite you could expedite they could expedite
V-ing form
I could be expediting you could be expediting he could be expediting we could be expediting you could be expediting they could be expediting
Perfect
I could have expedited you could have expedited he 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 he 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 he 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 he 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 he 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 he 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 he expedite? could we expedite? could you expedite? could they expedite?
V-ing form
could I be expediting? could you be expediting? could he be expediting? could we be expediting? could you be expediting? could they be expediting?
Perfect
could I have expedited? could you have expedited? could he 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 he 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 he 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 he 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 he 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 he have been expediting? couldn't we have been expediting? couldn't you have been expediting? couldn't they have been expediting?