could mush
Regular verb: mush - mushed- mushed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mush
you could mush
she could mush
we could mush
you could mush
they could mush 	I could be mushing
you could be mushing
she could be mushing
we could be mushing
you could be mushing
they could be mushing	I could have mushed
you could have mushed
she could have mushed
we could have mushed
you could have mushed
they could have mushed	I could have been mushing
you could have been mushing
she could have been mushing
we could have been mushing
you could have been mushing
they could have been mushing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not mush
you could not mush
she could not mush
we could not mush
you could not mush
they could not mush 	I could not be mushing
you could not be mushing
she could not be mushing
we could not be mushing
you could not be mushing
they could not be mushing	I could not have mushed
you could not have mushed
she could not have mushed
we could not have mushed
you could not have mushed
they could not have mushed	I could not have been mushing
you could not have been mushing
she could not have been mushing
we could not have been mushing
you could not have been mushing
they could not have been mushing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mush?
could you mush?
could she mush?
could we mush?
could you mush?
could they mush? 	could I be mushing?
could you be mushing?
could she be mushing?
could we be mushing?
could you be mushing?
could they be mushing? 	could I have mushed?
could you have mushed?
could she have mushed?
could we have mushed?
could you have mushed?
could they have mushed? 	could I have been mushing?
could you have been mushing?
could she have been mushing?
could we have been mushing?
could you have been mushing?
could they have been mushing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not mush?
could you not mush?
could she not mush?
could we not mush?
could you not mush?
could they not mush? 	could I not be mushing?
could you not be mushing?
could she not be mushing?
could we not be mushing?
could you not be mushing?
could they not be mushing? 	could I not have mushed?
could you not have mushed?
could she not have mushed?
could we not have mushed?
could you not have mushed?
could they not have mushed? 	could I not have been mushing?
could you not have been mushing?
could she not have been mushing?
could we not have been mushing?
could you not have been mushing?
could they not have been mushing?