I could memorialize you could memorialize he could memorialize we could memorialize you could memorialize they could memorialize
V-ing form
I could be memorializing you could be memorializing he could be memorializing we could be memorializing you could be memorializing they could be memorializing
Perfect
I could have memorialized you could have memorialized he could have memorialized we could have memorialized you could have memorialized they could have memorialized
V-ing perfect
I could have been memorializing you could have been memorializing he could have been memorializing we could have been memorializing you could have been memorializing they could have been memorializing
Negation
Simple form
I could not memorialize you could not memorialize he could not memorialize we could not memorialize you could not memorialize they could not memorialize
V-ing form
I could not be memorializing you could not be memorializing he could not be memorializing we could not be memorializing you could not be memorializing they could not be memorializing
Perfect
I could not have memorialized you could not have memorialized he could not have memorialized we could not have memorialized you could not have memorialized they could not have memorialized
V-ing perfect
I could not have been memorializing you could not have been memorializing he could not have been memorializing we could not have been memorializing you could not have been memorializing they could not have been memorializing
Interrogative form
Simple form
could I memorialize? could you memorialize? could he memorialize? could we memorialize? could you memorialize? could they memorialize?
V-ing form
could I be memorializing? could you be memorializing? could he be memorializing? could we be memorializing? could you be memorializing? could they be memorializing?
Perfect
could I have memorialized? could you have memorialized? could he have memorialized? could we have memorialized? could you have memorialized? could they have memorialized?
V-ing perfect
could I have been memorializing? could you have been memorializing? could he have been memorializing? could we have been memorializing? could you have been memorializing? could they have been memorializing?
Interro-negative form
Simple form
could I not memorialize? could you not memorialize? could he not memorialize? could we not memorialize? could you not memorialize? could they not memorialize?
V-ing form
could I not be memorializing? could you not be memorializing? could he not be memorializing? could we not be memorializing? could you not be memorializing? could they not be memorializing?
Perfect
could I not have memorialized? could you not have memorialized? could he not have memorialized? could we not have memorialized? could you not have memorialized? could they not have memorialized?
V-ing perfect
could I not have been memorializing? could you not have been memorializing? could he not have been memorializing? could we not have been memorializing? could you not have been memorializing? could they not have been memorializing?