can excuse
Regular verb: excuse - excused- excused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can excuse
you can excuse
she can excuse
we can excuse
you can excuse
they can excuse 	I can be excusing
you can be excusing
she can be excusing
we can be excusing
you can be excusing
they can be excusing	I can have excused
you can have excused
she can have excused
we can have excused
you can have excused
they can have excused	I can have been excusing
you can have been excusing
she can have been excusing
we can have been excusing
you can have been excusing
they can have been excusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't excuse
you can't excuse
she can't excuse
we can't excuse
you can't excuse
they can't excuse 	I can't be excusing
you can't be excusing
she can't be excusing
we can't be excusing
you can't be excusing
they can't be excusing	I can't have excused
you can't have excused
she can't have excused
we can't have excused
you can't have excused
they can't have excused	I can't have been excusing
you can't have been excusing
she can't have been excusing
we can't have been excusing
you can't have been excusing
they can't have been excusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I excuse?
can you excuse?
can she excuse?
can we excuse?
can you excuse?
can they excuse? 	can I be excusing?
can you be excusing?
can she be excusing?
can we be excusing?
can you be excusing?
can they be excusing? 	can I have excused?
can you have excused?
can she have excused?
can we have excused?
can you have excused?
can they have excused? 	can I have been excusing?
can you have been excusing?
can she have been excusing?
can we have been excusing?
can you have been excusing?
can they have been excusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I excuse?
can't you excuse?
can't she excuse?
can't we excuse?
can't you excuse?
can't they excuse? 	can't I be excusing?
can't you be excusing?
can't she be excusing?
can't we be excusing?
can't you be excusing?
can't they be excusing? 	can't I have excused?
can't you have excused?
can't she have excused?
can't we have excused?
can't you have excused?
can't they have excused? 	can't I have been excusing?
can't you have been excusing?
can't she have been excusing?
can't we have been excusing?
can't you have been excusing?
can't they have been excusing?