English verb conjugation
COULD MINE

Regular verb: mine - mined - mined

Affirmation

Simple form	V-ing form
I could mine you could mine he could mine we could mine you could mine they could mine	I could be mining you could be mining he could be mining we could be mining you could be mining they could be mining
Perfect	V-ing perfect
I could have mined you could have mined he could have mined we could have mined you could have mined they could have mined	I could have been mining you could have been mining he could have been mining we could have been mining you could have been mining they could have been mining

Negation

Simple form	V-ing form
I couldn't mine you couldn't mine he couldn't mine we couldn't mine you couldn't mine they couldn't mine	I couldn't be mining you couldn't be mining he couldn't be mining we couldn't be mining you couldn't be mining they couldn't be mining
Perfect	V-ing perfect
I couldn't have mined you couldn't have mined he couldn't have mined we couldn't have mined you couldn't have mined they couldn't have mined	I couldn't have been mining you couldn't have been mining he couldn't have been mining we couldn't have been mining you couldn't have been mining they couldn't have been mining

Interrogative form

Simple form	V-ing form
could I mine? could you mine? could he mine? could we mine? could you mine? could they mine?	could I be mining? could you be mining? could he be mining? could we be mining? could you be mining? could they be mining?
Perfect	V-ing perfect
could I have mined? could you have mined? could he have mined? could we have mined? could you have mined? could they have mined?	could I have been mining? could you have been mining? could he have been mining? could we have been mining? could you have been mining? could they have been mining?

Interro-negative form

Simple form	V-ing form
couldn't I mine? couldn't you mine? couldn't he mine? couldn't we mine? couldn't you mine? couldn't they mine?	couldn't I be mining? couldn't you be mining? couldn't he be mining? couldn't we be mining? couldn't you be mining? couldn't they be mining?
Perfect	V-ing perfect
couldn't I have mined? couldn't you have mined? couldn't he have mined? couldn't we have mined? couldn't you have mined? couldn't they have mined?	couldn't I have been mining? couldn't you have been mining? couldn't he have been mining? couldn't we have been mining? couldn't you have been mining? couldn't they have been mining?