English verb conjugation
COULD DISGRUNTLE

Regular verb: disgruntle - disgruntled - disgruntled

Affirmation

Simple form	V-ing form
I could disgruntle you could disgruntle he could disgruntle we could disgruntle you could disgruntle they could disgruntle	I could be disgruntling you could be disgruntling he could be disgruntling we could be disgruntling you could be disgruntling they could be disgruntling
Perfect	V-ing perfect
I could have disgruntled you could have disgruntled he could have disgruntled we could have disgruntled you could have disgruntled they could have disgruntled	I could have been disgruntling you could have been disgruntling he could have been disgruntling we could have been disgruntling you could have been disgruntling they could have been disgruntling

Negation

Simple form	V-ing form
I couldn't disgruntle you couldn't disgruntle he couldn't disgruntle we couldn't disgruntle you couldn't disgruntle they couldn't disgruntle	I couldn't be disgruntling you couldn't be disgruntling he couldn't be disgruntling we couldn't be disgruntling you couldn't be disgruntling they couldn't be disgruntling
Perfect	V-ing perfect
I couldn't have disgruntled you couldn't have disgruntled he couldn't have disgruntled we couldn't have disgruntled you couldn't have disgruntled they couldn't have disgruntled	I couldn't have been disgruntling you couldn't have been disgruntling he couldn't have been disgruntling we couldn't have been disgruntling you couldn't have been disgruntling they couldn't have been disgruntling

Interrogative form

Simple form	V-ing form
could I disgruntle? could you disgruntle? could he disgruntle? could we disgruntle? could you disgruntle? could they disgruntle?	could I be disgruntling? could you be disgruntling? could he be disgruntling? could we be disgruntling? could you be disgruntling? could they be disgruntling?
Perfect	V-ing perfect
could I have disgruntled? could you have disgruntled? could he have disgruntled? could we have disgruntled? could you have disgruntled? could they have disgruntled?	could I have been disgruntling? could you have been disgruntling? could he have been disgruntling? could we have been disgruntling? could you have been disgruntling? could they have been disgruntling?

Interro-negative form

Simple form	V-ing form
couldn't I disgruntle? couldn't you disgruntle? couldn't he disgruntle? couldn't we disgruntle? couldn't you disgruntle? couldn't they disgruntle?	couldn't I be disgruntling? couldn't you be disgruntling? couldn't he be disgruntling? couldn't we be disgruntling? couldn't you be disgruntling? couldn't they be disgruntling?
Perfect	V-ing perfect
couldn't I have disgruntled? couldn't you have disgruntled? couldn't he have disgruntled? couldn't we have disgruntled? couldn't you have disgruntled? couldn't they have disgruntled?	couldn't I have been disgruntling? couldn't you have been disgruntling? couldn't he have been disgruntling? couldn't we have been disgruntling? couldn't you have been disgruntling? couldn't they have been disgruntling?