English verb conjugation
COULD PURPOSE

Regular verb: purpose - purposed - purposed

Affirmation

Simple form	V-ing form
I could purpose you could purpose he could purpose we could purpose you could purpose they could purpose	I could be purposing you could be purposing he could be purposing we could be purposing you could be purposing they could be purposing
Perfect	V-ing perfect
I could have purposed you could have purposed he could have purposed we could have purposed you could have purposed they could have purposed	I could have been purposing you could have been purposing he could have been purposing we could have been purposing you could have been purposing they could have been purposing

Negation

Simple form	V-ing form
I couldn't purpose you couldn't purpose he couldn't purpose we couldn't purpose you couldn't purpose they couldn't purpose	I couldn't be purposing you couldn't be purposing he couldn't be purposing we couldn't be purposing you couldn't be purposing they couldn't be purposing
Perfect	V-ing perfect
I couldn't have purposed you couldn't have purposed he couldn't have purposed we couldn't have purposed you couldn't have purposed they couldn't have purposed	I couldn't have been purposing you couldn't have been purposing he couldn't have been purposing we couldn't have been purposing you couldn't have been purposing they couldn't have been purposing

Interrogative form

Simple form	V-ing form
could I purpose? could you purpose? could he purpose? could we purpose? could you purpose? could they purpose?	could I be purposing? could you be purposing? could he be purposing? could we be purposing? could you be purposing? could they be purposing?
Perfect	V-ing perfect
could I have purposed? could you have purposed? could he have purposed? could we have purposed? could you have purposed? could they have purposed?	could I have been purposing? could you have been purposing? could he have been purposing? could we have been purposing? could you have been purposing? could they have been purposing?

Interro-negative form

Simple form	V-ing form
couldn't I purpose? couldn't you purpose? couldn't he purpose? couldn't we purpose? couldn't you purpose? couldn't they purpose?	couldn't I be purposing? couldn't you be purposing? couldn't he be purposing? couldn't we be purposing? couldn't you be purposing? couldn't they be purposing?
Perfect	V-ing perfect
couldn't I have purposed? couldn't you have purposed? couldn't he have purposed? couldn't we have purposed? couldn't you have purposed? couldn't they have purposed?	couldn't I have been purposing? couldn't you have been purposing? couldn't he have been purposing? couldn't we have been purposing? couldn't you have been purposing? couldn't they have been purposing?