I could desire you could desire she could desire we could desire you could desire they could desire
V-ing form
I could be desiring you could be desiring she could be desiring we could be desiring you could be desiring they could be desiring
Perfect
I could have desired you could have desired she could have desired we could have desired you could have desired they could have desired
V-ing perfect
I could have been desiring you could have been desiring she could have been desiring we could have been desiring you could have been desiring they could have been desiring
Negation
Simple form
I could not desire you could not desire she could not desire we could not desire you could not desire they could not desire
V-ing form
I could not be desiring you could not be desiring she could not be desiring we could not be desiring you could not be desiring they could not be desiring
Perfect
I could not have desired you could not have desired she could not have desired we could not have desired you could not have desired they could not have desired
V-ing perfect
I could not have been desiring you could not have been desiring she could not have been desiring we could not have been desiring you could not have been desiring they could not have been desiring
Interrogative form
Simple form
could I desire? could you desire? could she desire? could we desire? could you desire? could they desire?
V-ing form
could I be desiring? could you be desiring? could she be desiring? could we be desiring? could you be desiring? could they be desiring?
Perfect
could I have desired? could you have desired? could she have desired? could we have desired? could you have desired? could they have desired?
V-ing perfect
could I have been desiring? could you have been desiring? could she have been desiring? could we have been desiring? could you have been desiring? could they have been desiring?
Interro-negative form
Simple form
could I not desire? could you not desire? could she not desire? could we not desire? could you not desire? could they not desire?
V-ing form
could I not be desiring? could you not be desiring? could she not be desiring? could we not be desiring? could you not be desiring? could they not be desiring?
Perfect
could I not have desired? could you not have desired? could she not have desired? could we not have desired? could you not have desired? could they not have desired?
V-ing perfect
could I not have been desiring? could you not have been desiring? could she not have been desiring? could we not have been desiring? could you not have been desiring? could they not have been desiring?