English verb conjugation
COULD JUG

Regular verb: jug - jugged - jugged

Affirmation

Simple form	V-ing form
I could jug you could jug he could jug we could jug you could jug they could jug	I could be jugging you could be jugging he could be jugging we could be jugging you could be jugging they could be jugging
Perfect	V-ing perfect
I could have jugged you could have jugged he could have jugged we could have jugged you could have jugged they could have jugged	I could have been jugging you could have been jugging he could have been jugging we could have been jugging you could have been jugging they could have been jugging

Negation

Simple form	V-ing form
I could not jug you could not jug he could not jug we could not jug you could not jug they could not jug	I could not be jugging you could not be jugging he could not be jugging we could not be jugging you could not be jugging they could not be jugging
Perfect	V-ing perfect
I could not have jugged you could not have jugged he could not have jugged we could not have jugged you could not have jugged they could not have jugged	I could not have been jugging you could not have been jugging he could not have been jugging we could not have been jugging you could not have been jugging they could not have been jugging

Interrogative form

Simple form	V-ing form
could I jug? could you jug? could he jug? could we jug? could you jug? could they jug?	could I be jugging? could you be jugging? could he be jugging? could we be jugging? could you be jugging? could they be jugging?
Perfect	V-ing perfect
could I have jugged? could you have jugged? could he have jugged? could we have jugged? could you have jugged? could they have jugged?	could I have been jugging? could you have been jugging? could he have been jugging? could we have been jugging? could you have been jugging? could they have been jugging?

Interro-negative form

Simple form	V-ing form
could I not jug? could you not jug? could he not jug? could we not jug? could you not jug? could they not jug?	could I not be jugging? could you not be jugging? could he not be jugging? could we not be jugging? could you not be jugging? could they not be jugging?
Perfect	V-ing perfect
could I not have jugged? could you not have jugged? could he not have jugged? could we not have jugged? could you not have jugged? could they not have jugged?	could I not have been jugging? could you not have been jugging? could he not have been jugging? could we not have been jugging? could you not have been jugging? could they not have been jugging?