English verb conjugation
COULD FLOCK

Regular verb: flock - flocked - flocked

Affirmation

Simple form	V-ing form
I could flock you could flock she could flock we could flock you could flock they could flock	I could be flocking you could be flocking she could be flocking we could be flocking you could be flocking they could be flocking
Perfect	V-ing perfect
I could have flocked you could have flocked she could have flocked we could have flocked you could have flocked they could have flocked	I could have been flocking you could have been flocking she could have been flocking we could have been flocking you could have been flocking they could have been flocking

Negation

Simple form	V-ing form
I could not flock you could not flock she could not flock we could not flock you could not flock they could not flock	I could not be flocking you could not be flocking she could not be flocking we could not be flocking you could not be flocking they could not be flocking
Perfect	V-ing perfect
I could not have flocked you could not have flocked she could not have flocked we could not have flocked you could not have flocked they could not have flocked	I could not have been flocking you could not have been flocking she could not have been flocking we could not have been flocking you could not have been flocking they could not have been flocking

Interrogative form

Simple form	V-ing form
could I flock? could you flock? could she flock? could we flock? could you flock? could they flock?	could I be flocking? could you be flocking? could she be flocking? could we be flocking? could you be flocking? could they be flocking?
Perfect	V-ing perfect
could I have flocked? could you have flocked? could she have flocked? could we have flocked? could you have flocked? could they have flocked?	could I have been flocking? could you have been flocking? could she have been flocking? could we have been flocking? could you have been flocking? could they have been flocking?

Interro-negative form

Simple form	V-ing form
could I not flock? could you not flock? could she not flock? could we not flock? could you not flock? could they not flock?	could I not be flocking? could you not be flocking? could she not be flocking? could we not be flocking? could you not be flocking? could they not be flocking?
Perfect	V-ing perfect
could I not have flocked? could you not have flocked? could she not have flocked? could we not have flocked? could you not have flocked? could they not have flocked?	could I not have been flocking? could you not have been flocking? could she not have been flocking? could we not have been flocking? could you not have been flocking? could they not have been flocking?