English verb conjugation
COULD COUNTERMINE

Regular verb: countermine - countermined - countermined

Affirmation

Simple form	V-ing form
I could countermine you could countermine he could countermine we could countermine you could countermine they could countermine	I could be countermining you could be countermining he could be countermining we could be countermining you could be countermining they could be countermining
Perfect	V-ing perfect
I could have countermined you could have countermined he could have countermined we could have countermined you could have countermined they could have countermined	I could have been countermining you could have been countermining he could have been countermining we could have been countermining you could have been countermining they could have been countermining

Negation

Simple form	V-ing form
I couldn't countermine you couldn't countermine he couldn't countermine we couldn't countermine you couldn't countermine they couldn't countermine	I couldn't be countermining you couldn't be countermining he couldn't be countermining we couldn't be countermining you couldn't be countermining they couldn't be countermining
Perfect	V-ing perfect
I couldn't have countermined you couldn't have countermined he couldn't have countermined we couldn't have countermined you couldn't have countermined they couldn't have countermined	I couldn't have been countermining you couldn't have been countermining he couldn't have been countermining we couldn't have been countermining you couldn't have been countermining they couldn't have been countermining

Interrogative form

Simple form	V-ing form
could I countermine? could you countermine? could he countermine? could we countermine? could you countermine? could they countermine?	could I be countermining? could you be countermining? could he be countermining? could we be countermining? could you be countermining? could they be countermining?
Perfect	V-ing perfect
could I have countermined? could you have countermined? could he have countermined? could we have countermined? could you have countermined? could they have countermined?	could I have been countermining? could you have been countermining? could he have been countermining? could we have been countermining? could you have been countermining? could they have been countermining?

Interro-negative form

Simple form	V-ing form
couldn't I countermine? couldn't you countermine? couldn't he countermine? couldn't we countermine? couldn't you countermine? couldn't they countermine?	couldn't I be countermining? couldn't you be countermining? couldn't he be countermining? couldn't we be countermining? couldn't you be countermining? couldn't they be countermining?
Perfect	V-ing perfect
couldn't I have countermined? couldn't you have countermined? couldn't he have countermined? couldn't we have countermined? couldn't you have countermined? couldn't they have countermined?	couldn't I have been countermining? couldn't you have been countermining? couldn't he have been countermining? couldn't we have been countermining? couldn't you have been countermining? couldn't they have been countermining?