can endorse
Regular verb: endorse - endorsed- endorsed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I can't endorse
you can't endorse
she can't endorse
we can't endorse
you can't endorse
they can't endorse 	I can't be endorsing
you can't be endorsing
she can't be endorsing
we can't be endorsing
you can't be endorsing
they can't be endorsing	I can't have endorsed
you can't have endorsed
she can't have endorsed
we can't have endorsed
you can't have endorsed
they can't have endorsed	I can't have been endorsing
you can't have been endorsing
she can't have been endorsing
we can't have been endorsing
you can't have been endorsing
they can't have been endorsing	

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