English verb conjugation
COULD DEMUR

Regular verb: demur - demurred - demurred

Affirmation

Simple form	V-ing form
I could demur you could demur he could demur we could demur you could demur they could demur	I could be demurring you could be demurring he could be demurring we could be demurring you could be demurring they could be demurring
Perfect	V-ing perfect
I could have demurred you could have demurred he could have demurred we could have demurred you could have demurred they could have demurred	I could have been demurring you could have been demurring he could have been demurring we could have been demurring you could have been demurring they could have been demurring

Negation

Simple form	V-ing form
I couldn't demur you couldn't demur he couldn't demur we couldn't demur you couldn't demur they couldn't demur	I couldn't be demurring you couldn't be demurring he couldn't be demurring we couldn't be demurring you couldn't be demurring they couldn't be demurring
Perfect	V-ing perfect
I couldn't have demurred you couldn't have demurred he couldn't have demurred we couldn't have demurred you couldn't have demurred they couldn't have demurred	I couldn't have been demurring you couldn't have been demurring he couldn't have been demurring we couldn't have been demurring you couldn't have been demurring they couldn't have been demurring

Interrogative form

Simple form	V-ing form
could I demur? could you demur? could he demur? could we demur? could you demur? could they demur?	could I be demurring? could you be demurring? could he be demurring? could we be demurring? could you be demurring? could they be demurring?
Perfect	V-ing perfect
could I have demurred? could you have demurred? could he have demurred? could we have demurred? could you have demurred? could they have demurred?	could I have been demurring? could you have been demurring? could he have been demurring? could we have been demurring? could you have been demurring? could they have been demurring?

Interro-negative form

Simple form	V-ing form
couldn't I demur? couldn't you demur? couldn't he demur? couldn't we demur? couldn't you demur? couldn't they demur?	couldn't I be demurring? couldn't you be demurring? couldn't he be demurring? couldn't we be demurring? couldn't you be demurring? couldn't they be demurring?
Perfect	V-ing perfect
couldn't I have demurred? couldn't you have demurred? couldn't he have demurred? couldn't we have demurred? couldn't you have demurred? couldn't they have demurred?	couldn't I have been demurring? couldn't you have been demurring? couldn't he have been demurring? couldn't we have been demurring? couldn't you have been demurring? couldn't they have been demurring?