English verb conjugation
COULD EXHAUST

Regular verb: exhaust - exhausted - exhausted

Affirmation

Simple form	V-ing form
I could exhaust you could exhaust he could exhaust we could exhaust you could exhaust they could exhaust	I could be exhausting you could be exhausting he could be exhausting we could be exhausting you could be exhausting they could be exhausting
Perfect	V-ing perfect
I could have exhausted you could have exhausted he could have exhausted we could have exhausted you could have exhausted they could have exhausted	I could have been exhausting you could have been exhausting he could have been exhausting we could have been exhausting you could have been exhausting they could have been exhausting

Negation

Simple form	V-ing form
I couldn't exhaust you couldn't exhaust he couldn't exhaust we couldn't exhaust you couldn't exhaust they couldn't exhaust	I couldn't be exhausting you couldn't be exhausting he couldn't be exhausting we couldn't be exhausting you couldn't be exhausting they couldn't be exhausting
Perfect	V-ing perfect
I couldn't have exhausted you couldn't have exhausted he couldn't have exhausted we couldn't have exhausted you couldn't have exhausted they couldn't have exhausted	I couldn't have been exhausting you couldn't have been exhausting he couldn't have been exhausting we couldn't have been exhausting you couldn't have been exhausting they couldn't have been exhausting

Interrogative form

Simple form	V-ing form
could I exhaust? could you exhaust? could he exhaust? could we exhaust? could you exhaust? could they exhaust?	could I be exhausting? could you be exhausting? could he be exhausting? could we be exhausting? could you be exhausting? could they be exhausting?
Perfect	V-ing perfect
could I have exhausted? could you have exhausted? could he have exhausted? could we have exhausted? could you have exhausted? could they have exhausted?	could I have been exhausting? could you have been exhausting? could he have been exhausting? could we have been exhausting? could you have been exhausting? could they have been exhausting?

Interro-negative form

Simple form	V-ing form
couldn't I exhaust? couldn't you exhaust? couldn't he exhaust? couldn't we exhaust? couldn't you exhaust? couldn't they exhaust?	couldn't I be exhausting? couldn't you be exhausting? couldn't he be exhausting? couldn't we be exhausting? couldn't you be exhausting? couldn't they be exhausting?
Perfect	V-ing perfect
couldn't I have exhausted? couldn't you have exhausted? couldn't he have exhausted? couldn't we have exhausted? couldn't you have exhausted? couldn't they have exhausted?	couldn't I have been exhausting? couldn't you have been exhausting? couldn't he have been exhausting? couldn't we have been exhausting? couldn't you have been exhausting? couldn't they have been exhausting?