English verb conjugation
COULD FIN

Regular verb: fin - fined - fined

Affirmation

Simple form	V-ing form
I could fin you could fin he could fin we could fin you could fin they could fin	I could be fining you could be fining he could be fining we could be fining you could be fining they could be fining
Perfect	V-ing perfect
I could have fined you could have fined he could have fined we could have fined you could have fined they could have fined	I could have been fining you could have been fining he could have been fining we could have been fining you could have been fining they could have been fining

Negation

Simple form	V-ing form
I couldn't fin you couldn't fin he couldn't fin we couldn't fin you couldn't fin they couldn't fin	I couldn't be fining you couldn't be fining he couldn't be fining we couldn't be fining you couldn't be fining they couldn't be fining
Perfect	V-ing perfect
I couldn't have fined you couldn't have fined he couldn't have fined we couldn't have fined you couldn't have fined they couldn't have fined	I couldn't have been fining you couldn't have been fining he couldn't have been fining we couldn't have been fining you couldn't have been fining they couldn't have been fining

Interrogative form

Simple form	V-ing form
could I fin? could you fin? could he fin? could we fin? could you fin? could they fin?	could I be fining? could you be fining? could he be fining? could we be fining? could you be fining? could they be fining?
Perfect	V-ing perfect
could I have fined? could you have fined? could he have fined? could we have fined? could you have fined? could they have fined?	could I have been fining? could you have been fining? could he have been fining? could we have been fining? could you have been fining? could they have been fining?

Interro-negative form

Simple form	V-ing form
couldn't I fin? couldn't you fin? couldn't he fin? couldn't we fin? couldn't you fin? couldn't they fin?	couldn't I be fining? couldn't you be fining? couldn't he be fining? couldn't we be fining? couldn't you be fining? couldn't they be fining?
Perfect	V-ing perfect
couldn't I have fined? couldn't you have fined? couldn't he have fined? couldn't we have fined? couldn't you have fined? couldn't they have fined?	couldn't I have been fining? couldn't you have been fining? couldn't he have been fining? couldn't we have been fining? couldn't you have been fining? couldn't they have been fining?