I could parry you could parry he could parry we could parry you could parry they could parry
V-ing form
I could be parrying you could be parrying he could be parrying we could be parrying you could be parrying they could be parrying
Perfect
I could have parried you could have parried he could have parried we could have parried you could have parried they could have parried
V-ing perfect
I could have been parrying you could have been parrying he could have been parrying we could have been parrying you could have been parrying they could have been parrying
Negation
Simple form
I could not parry you could not parry he could not parry we could not parry you could not parry they could not parry
V-ing form
I could not be parrying you could not be parrying he could not be parrying we could not be parrying you could not be parrying they could not be parrying
Perfect
I could not have parried you could not have parried he could not have parried we could not have parried you could not have parried they could not have parried
V-ing perfect
I could not have been parrying you could not have been parrying he could not have been parrying we could not have been parrying you could not have been parrying they could not have been parrying
Interrogative form
Simple form
could I parry? could you parry? could he parry? could we parry? could you parry? could they parry?
V-ing form
could I be parrying? could you be parrying? could he be parrying? could we be parrying? could you be parrying? could they be parrying?
Perfect
could I have parried? could you have parried? could he have parried? could we have parried? could you have parried? could they have parried?
V-ing perfect
could I have been parrying? could you have been parrying? could he have been parrying? could we have been parrying? could you have been parrying? could they have been parrying?
Interro-negative form
Simple form
could I not parry? could you not parry? could he not parry? could we not parry? could you not parry? could they not parry?
V-ing form
could I not be parrying? could you not be parrying? could he not be parrying? could we not be parrying? could you not be parrying? could they not be parrying?
Perfect
could I not have parried? could you not have parried? could he not have parried? could we not have parried? could you not have parried? could they not have parried?
V-ing perfect
could I not have been parrying? could you not have been parrying? could he not have been parrying? could we not have been parrying? could you not have been parrying? could they not have been parrying?