English verb conjugation
COULD FETTLE

Regular verb: fettle - fettled - fettled

Affirmation

Simple form	V-ing form
I could fettle you could fettle he could fettle we could fettle you could fettle they could fettle	I could be fettling you could be fettling he could be fettling we could be fettling you could be fettling they could be fettling
Perfect	V-ing perfect
I could have fettled you could have fettled he could have fettled we could have fettled you could have fettled they could have fettled	I could have been fettling you could have been fettling he could have been fettling we could have been fettling you could have been fettling they could have been fettling

Negation

Simple form	V-ing form
I couldn't fettle you couldn't fettle he couldn't fettle we couldn't fettle you couldn't fettle they couldn't fettle	I couldn't be fettling you couldn't be fettling he couldn't be fettling we couldn't be fettling you couldn't be fettling they couldn't be fettling
Perfect	V-ing perfect
I couldn't have fettled you couldn't have fettled he couldn't have fettled we couldn't have fettled you couldn't have fettled they couldn't have fettled	I couldn't have been fettling you couldn't have been fettling he couldn't have been fettling we couldn't have been fettling you couldn't have been fettling they couldn't have been fettling

Interrogative form

Simple form	V-ing form
could I fettle? could you fettle? could he fettle? could we fettle? could you fettle? could they fettle?	could I be fettling? could you be fettling? could he be fettling? could we be fettling? could you be fettling? could they be fettling?
Perfect	V-ing perfect
could I have fettled? could you have fettled? could he have fettled? could we have fettled? could you have fettled? could they have fettled?	could I have been fettling? could you have been fettling? could he have been fettling? could we have been fettling? could you have been fettling? could they have been fettling?

Interro-negative form

Simple form	V-ing form
couldn't I fettle? couldn't you fettle? couldn't he fettle? couldn't we fettle? couldn't you fettle? couldn't they fettle?	couldn't I be fettling? couldn't you be fettling? couldn't he be fettling? couldn't we be fettling? couldn't you be fettling? couldn't they be fettling?
Perfect	V-ing perfect
couldn't I have fettled? couldn't you have fettled? couldn't he have fettled? couldn't we have fettled? couldn't you have fettled? couldn't they have fettled?	couldn't I have been fettling? couldn't you have been fettling? couldn't he have been fettling? couldn't we have been fettling? couldn't you have been fettling? couldn't they have been fettling?