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 couldn't yock you couldn't yock she couldn't yock we couldn't yock you couldn't yock they couldn't yock	I couldn't be yocking you couldn't be yocking she couldn't be yocking we couldn't be yocking you couldn't be yocking they couldn't be yocking
Perfect	V-ing perfect
I couldn't have yocked you couldn't have yocked she couldn't have yocked we couldn't have yocked you couldn't have yocked they couldn't have yocked	I couldn't have been yocking you couldn't have been yocking she couldn't have been yocking we couldn't have been yocking you couldn't have been yocking they couldn't 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
couldn't I yock? couldn't you yock? couldn't she yock? couldn't we yock? couldn't you yock? couldn't they yock?	couldn't I be yocking? couldn't you be yocking? couldn't she be yocking? couldn't we be yocking? couldn't you be yocking? couldn't they be yocking?
Perfect	V-ing perfect
couldn't I have yocked? couldn't you have yocked? couldn't she have yocked? couldn't we have yocked? couldn't you have yocked? couldn't they have yocked?	couldn't I have been yocking? couldn't you have been yocking? couldn't she have been yocking? couldn't we have been yocking? couldn't you have been yocking? couldn't they have been yocking?