Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could plead plead you could plead plead she could plead plead we could plead plead you could plead plead they could plead plead
V-ing form
I could be plead pleading you could be plead pleading she could be plead pleading we could be plead pleading you could be plead pleading they could be plead pleading
Perfect
I could have plead pleaded you could have plead pleaded she could have plead pleaded we could have plead pleaded you could have plead pleaded they could have plead pleaded
V-ing perfect
I could have been plead pleading you could have been plead pleading she could have been plead pleading we could have been plead pleading you could have been plead pleading they could have been plead pleading
Negation
Simple form
I could not plead plead you could not plead plead she could not plead plead we could not plead plead you could not plead plead they could not plead plead
V-ing form
I could not be plead pleading you could not be plead pleading she could not be plead pleading we could not be plead pleading you could not be plead pleading they could not be plead pleading
Perfect
I could not have plead pleaded you could not have plead pleaded she could not have plead pleaded we could not have plead pleaded you could not have plead pleaded they could not have plead pleaded
V-ing perfect
I could not have been plead pleading you could not have been plead pleading she could not have been plead pleading we could not have been plead pleading you could not have been plead pleading they could not have been plead pleading
Interrogative form
Simple form
could I plead plead? could you plead plead? could she plead plead? could we plead plead? could you plead plead? could they plead plead?
V-ing form
could I be plead pleading? could you be plead pleading? could she be plead pleading? could we be plead pleading? could you be plead pleading? could they be plead pleading?
Perfect
could I have plead pleaded? could you have plead pleaded? could she have plead pleaded? could we have plead pleaded? could you have plead pleaded? could they have plead pleaded?
V-ing perfect
could I have been plead pleading? could you have been plead pleading? could she have been plead pleading? could we have been plead pleading? could you have been plead pleading? could they have been plead pleading?
Interro-negative form
Simple form
could I not plead plead? could you not plead plead? could she not plead plead? could we not plead plead? could you not plead plead? could they not plead plead?
V-ing form
could I not be plead pleading? could you not be plead pleading? could she not be plead pleading? could we not be plead pleading? could you not be plead pleading? could they not be plead pleading?
Perfect
could I not have plead pleaded? could you not have plead pleaded? could she not have plead pleaded? could we not have plead pleaded? could you not have plead pleaded? could they not have plead pleaded?
V-ing perfect
could I not have been plead pleading? could you not have been plead pleading? could she not have been plead pleading? could we not have been plead pleading? could you not have been plead pleading? could they not have been plead pleading?