English verb conjugation
COULD MILL

Regular verb: mill - milled - milled

Affirmation

Simple form	V-ing form
I could mill you could mill he could mill we could mill you could mill they could mill	I could be milling you could be milling he could be milling we could be milling you could be milling they could be milling
Perfect	V-ing perfect
I could have milled you could have milled he could have milled we could have milled you could have milled they could have milled	I could have been milling you could have been milling he could have been milling we could have been milling you could have been milling they could have been milling

Negation

Simple form	V-ing form
I couldn't mill you couldn't mill he couldn't mill we couldn't mill you couldn't mill they couldn't mill	I couldn't be milling you couldn't be milling he couldn't be milling we couldn't be milling you couldn't be milling they couldn't be milling
Perfect	V-ing perfect
I couldn't have milled you couldn't have milled he couldn't have milled we couldn't have milled you couldn't have milled they couldn't have milled	I couldn't have been milling you couldn't have been milling he couldn't have been milling we couldn't have been milling you couldn't have been milling they couldn't have been milling

Interrogative form

Simple form	V-ing form
could I mill? could you mill? could he mill? could we mill? could you mill? could they mill?	could I be milling? could you be milling? could he be milling? could we be milling? could you be milling? could they be milling?
Perfect	V-ing perfect
could I have milled? could you have milled? could he have milled? could we have milled? could you have milled? could they have milled?	could I have been milling? could you have been milling? could he have been milling? could we have been milling? could you have been milling? could they have been milling?

Interro-negative form

Simple form	V-ing form
couldn't I mill? couldn't you mill? couldn't he mill? couldn't we mill? couldn't you mill? couldn't they mill?	couldn't I be milling? couldn't you be milling? couldn't he be milling? couldn't we be milling? couldn't you be milling? couldn't they be milling?
Perfect	V-ing perfect
couldn't I have milled? couldn't you have milled? couldn't he have milled? couldn't we have milled? couldn't you have milled? couldn't they have milled?	couldn't I have been milling? couldn't you have been milling? couldn't he have been milling? couldn't we have been milling? couldn't you have been milling? couldn't they have been milling?