English verb conjugation
COULD ASSENT

Regular verb: assent - assented - assented

Affirmation

Simple form	V-ing form
I could assent you could assent he could assent we could assent you could assent they could assent	I could be assenting you could be assenting he could be assenting we could be assenting you could be assenting they could be assenting
Perfect	V-ing perfect
I could have assented you could have assented he could have assented we could have assented you could have assented they could have assented	I could have been assenting you could have been assenting he could have been assenting we could have been assenting you could have been assenting they could have been assenting

Negation

Simple form	V-ing form
I couldn't assent you couldn't assent he couldn't assent we couldn't assent you couldn't assent they couldn't assent	I couldn't be assenting you couldn't be assenting he couldn't be assenting we couldn't be assenting you couldn't be assenting they couldn't be assenting
Perfect	V-ing perfect
I couldn't have assented you couldn't have assented he couldn't have assented we couldn't have assented you couldn't have assented they couldn't have assented	I couldn't have been assenting you couldn't have been assenting he couldn't have been assenting we couldn't have been assenting you couldn't have been assenting they couldn't have been assenting

Interrogative form

Simple form	V-ing form
could I assent? could you assent? could he assent? could we assent? could you assent? could they assent?	could I be assenting? could you be assenting? could he be assenting? could we be assenting? could you be assenting? could they be assenting?
Perfect	V-ing perfect
could I have assented? could you have assented? could he have assented? could we have assented? could you have assented? could they have assented?	could I have been assenting? could you have been assenting? could he have been assenting? could we have been assenting? could you have been assenting? could they have been assenting?

Interro-negative form

Simple form	V-ing form
couldn't I assent? couldn't you assent? couldn't he assent? couldn't we assent? couldn't you assent? couldn't they assent?	couldn't I be assenting? couldn't you be assenting? couldn't he be assenting? couldn't we be assenting? couldn't you be assenting? couldn't they be assenting?
Perfect	V-ing perfect
couldn't I have assented? couldn't you have assented? couldn't he have assented? couldn't we have assented? couldn't you have assented? couldn't they have assented?	couldn't I have been assenting? couldn't you have been assenting? couldn't he have been assenting? couldn't we have been assenting? couldn't you have been assenting? couldn't they have been assenting?