English verb conjugation
COULD CHUG

Regular verb: chug - chugged - chugged

Affirmation

Simple form	V-ing form
I could chug you could chug he could chug we could chug you could chug they could chug	I could be chugging you could be chugging he could be chugging we could be chugging you could be chugging they could be chugging
Perfect	V-ing perfect
I could have chugged you could have chugged he could have chugged we could have chugged you could have chugged they could have chugged	I could have been chugging you could have been chugging he could have been chugging we could have been chugging you could have been chugging they could have been chugging

Negation

Simple form	V-ing form
I could not chug you could not chug he could not chug we could not chug you could not chug they could not chug	I could not be chugging you could not be chugging he could not be chugging we could not be chugging you could not be chugging they could not be chugging
Perfect	V-ing perfect
I could not have chugged you could not have chugged he could not have chugged we could not have chugged you could not have chugged they could not have chugged	I could not have been chugging you could not have been chugging he could not have been chugging we could not have been chugging you could not have been chugging they could not have been chugging

Interrogative form

Simple form	V-ing form
could I chug? could you chug? could he chug? could we chug? could you chug? could they chug?	could I be chugging? could you be chugging? could he be chugging? could we be chugging? could you be chugging? could they be chugging?
Perfect	V-ing perfect
could I have chugged? could you have chugged? could he have chugged? could we have chugged? could you have chugged? could they have chugged?	could I have been chugging? could you have been chugging? could he have been chugging? could we have been chugging? could you have been chugging? could they have been chugging?

Interro-negative form

Simple form	V-ing form
could I not chug? could you not chug? could he not chug? could we not chug? could you not chug? could they not chug?	could I not be chugging? could you not be chugging? could he not be chugging? could we not be chugging? could you not be chugging? could they not be chugging?
Perfect	V-ing perfect
could I not have chugged? could you not have chugged? could he not have chugged? could we not have chugged? could you not have chugged? could they not have chugged?	could I not have been chugging? could you not have been chugging? could he not have been chugging? could we not have been chugging? could you not have been chugging? could they not have been chugging?