I can assent you can assent she can assent we can assent you can assent they can assent
V-ing form
I can be assenting you can be assenting she can be assenting we can be assenting you can be assenting they can be assenting
Perfect
I can have assented you can have assented she can have assented we can have assented you can have assented they can have assented
V-ing perfect
I can have been assenting you can have been assenting she can have been assenting we can have been assenting you can have been assenting they can have been assenting
Negation
Simple form
I can't assent you can't assent she can't assent we can't assent you can't assent they can't assent
V-ing form
I can't be assenting you can't be assenting she can't be assenting we can't be assenting you can't be assenting they can't be assenting
Perfect
I can't have assented you can't have assented she can't have assented we can't have assented you can't have assented they can't have assented
V-ing perfect
I can't have been assenting you can't have been assenting she can't have been assenting we can't have been assenting you can't have been assenting they can't have been assenting
Interrogative form
Simple form
can I assent? can you assent? can she assent? can we assent? can you assent? can they assent?
V-ing form
can I be assenting? can you be assenting? can she be assenting? can we be assenting? can you be assenting? can they be assenting?
Perfect
can I have assented? can you have assented? can she have assented? can we have assented? can you have assented? can they have assented?
V-ing perfect
can I have been assenting? can you have been assenting? can she have been assenting? can we have been assenting? can you have been assenting? can they have been assenting?
Interro-negative form
Simple form
can't I assent? can't you assent? can't she assent? can't we assent? can't you assent? can't they assent?
V-ing form
can't I be assenting? can't you be assenting? can't she be assenting? can't we be assenting? can't you be assenting? can't they be assenting?
Perfect
can't I have assented? can't you have assented? can't she have assented? can't we have assented? can't you have assented? can't they have assented?
V-ing perfect
can't I have been assenting? can't you have been assenting? can't she have been assenting? can't we have been assenting? can't you have been assenting? can't they have been assenting?