English verb conjugation
CAN ENDORSE

Regular verb: endorse - endorsed - endorsed

Affirmation

Simple form	V-ing form
I can endorse you can endorse she can endorse we can endorse you can endorse they can endorse	I can be endorsing you can be endorsing she can be endorsing we can be endorsing you can be endorsing they can be endorsing
Perfect	V-ing perfect
I can have endorsed you can have endorsed she can have endorsed we can have endorsed you can have endorsed they can have endorsed	I can have been endorsing you can have been endorsing she can have been endorsing we can have been endorsing you can have been endorsing they can have been endorsing

Negation

Simple form	V-ing form
I cannot endorse you cannot endorse she cannot endorse we cannot endorse you cannot endorse they cannot endorse	I cannot be endorsing you cannot be endorsing she cannot be endorsing we cannot be endorsing you cannot be endorsing they cannot be endorsing
Perfect	V-ing perfect
I cannot have endorsed you cannot have endorsed she cannot have endorsed we cannot have endorsed you cannot have endorsed they cannot have endorsed	I cannot have been endorsing you cannot have been endorsing she cannot have been endorsing we cannot have been endorsing you cannot have been endorsing they cannot have been endorsing

Interrogative form

Simple form	V-ing form
can I endorse? can you endorse? can she endorse? can we endorse? can you endorse? can they endorse?	can I be endorsing? can you be endorsing? can she be endorsing? can we be endorsing? can you be endorsing? can they be endorsing?
Perfect	V-ing perfect
can I have endorsed? can you have endorsed? can she have endorsed? can we have endorsed? can you have endorsed? can they have endorsed?	can I have been endorsing? can you have been endorsing? can she have been endorsing? can we have been endorsing? can you have been endorsing? can they have been endorsing?

Interro-negative form

Simple form	V-ing form
can I not endorse? can you not endorse? can she not endorse? can we not endorse? can you not endorse? can they not endorse?	can I not be endorsing? can you not be endorsing? can she not be endorsing? can we not be endorsing? can you not be endorsing? can they not be endorsing?
Perfect	V-ing perfect
can I not have endorsed? can you not have endorsed? can she not have endorsed? can we not have endorsed? can you not have endorsed? can they not have endorsed?	can I not have been endorsing? can you not have been endorsing? can she not have been endorsing? can we not have been endorsing? can you not have been endorsing? can they not have been endorsing?