English verb conjugation
COULD YOCK

Regular verb: yock - yocked - yocked

Affirmation

Simple form	V-ing form
I could yock you could yock she could yock we could yock you could yock they could yock	I could be yocking you could be yocking she could be yocking we could be yocking you could be yocking they could be yocking
Perfect	V-ing perfect
I could have yocked you could have yocked she could have yocked we could have yocked you could have yocked they could have yocked	I could have been yocking you could have been yocking she could have been yocking we could have been yocking you could have been yocking they could have been yocking

Negation

Simple form	V-ing form
I could not yock you could not yock she could not yock we could not yock you could not yock they could not yock	I could not be yocking you could not be yocking she could not be yocking we could not be yocking you could not be yocking they could not be yocking
Perfect	V-ing perfect
I could not have yocked you could not have yocked she could not have yocked we could not have yocked you could not have yocked they could not have yocked	I could not have been yocking you could not have been yocking she could not have been yocking we could not have been yocking you could not have been yocking they could not have been yocking

Interrogative form

Simple form	V-ing form
could I yock? could you yock? could she yock? could we yock? could you yock? could they yock?	could I be yocking? could you be yocking? could she be yocking? could we be yocking? could you be yocking? could they be yocking?
Perfect	V-ing perfect
could I have yocked? could you have yocked? could she have yocked? could we have yocked? could you have yocked? could they have yocked?	could I have been yocking? could you have been yocking? could she have been yocking? could we have been yocking? could you have been yocking? could they have been yocking?

Interro-negative form

Simple form	V-ing form
could I not yock? could you not yock? could she not yock? could we not yock? could you not yock? could they not yock?	could I not be yocking? could you not be yocking? could she not be yocking? could we not be yocking? could you not be yocking? could they not be yocking?
Perfect	V-ing perfect
could I not have yocked? could you not have yocked? could she not have yocked? could we not have yocked? could you not have yocked? could they not have yocked?	could I not have been yocking? could you not have been yocking? could she not have been yocking? could we not have been yocking? could you not have been yocking? could they not have been yocking?