English verb conjugation
COULD YAUP

Regular verb: yaup - yauped - yauped

Affirmation

Simple form	V-ing form
I could yaup you could yaup he could yaup we could yaup you could yaup they could yaup	I could be yauping you could be yauping he could be yauping we could be yauping you could be yauping they could be yauping
Perfect	V-ing perfect
I could have yauped you could have yauped he could have yauped we could have yauped you could have yauped they could have yauped	I could have been yauping you could have been yauping he could have been yauping we could have been yauping you could have been yauping they could have been yauping

Negation

Simple form	V-ing form
I could not yaup you could not yaup he could not yaup we could not yaup you could not yaup they could not yaup	I could not be yauping you could not be yauping he could not be yauping we could not be yauping you could not be yauping they could not be yauping
Perfect	V-ing perfect
I could not have yauped you could not have yauped he could not have yauped we could not have yauped you could not have yauped they could not have yauped	I could not have been yauping you could not have been yauping he could not have been yauping we could not have been yauping you could not have been yauping they could not have been yauping

Interrogative form

Simple form	V-ing form
could I yaup? could you yaup? could he yaup? could we yaup? could you yaup? could they yaup?	could I be yauping? could you be yauping? could he be yauping? could we be yauping? could you be yauping? could they be yauping?
Perfect	V-ing perfect
could I have yauped? could you have yauped? could he have yauped? could we have yauped? could you have yauped? could they have yauped?	could I have been yauping? could you have been yauping? could he have been yauping? could we have been yauping? could you have been yauping? could they have been yauping?

Interro-negative form

Simple form	V-ing form
could I not yaup? could you not yaup? could he not yaup? could we not yaup? could you not yaup? could they not yaup?	could I not be yauping? could you not be yauping? could he not be yauping? could we not be yauping? could you not be yauping? could they not be yauping?
Perfect	V-ing perfect
could I not have yauped? could you not have yauped? could he not have yauped? could we not have yauped? could you not have yauped? could they not have yauped?	could I not have been yauping? could you not have been yauping? could he not have been yauping? could we not have been yauping? could you not have been yauping? could they not have been yauping?