could mush
Regular verb: mush - mushed- mushed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mush
you could mush
he could mush
we could mush
you could mush
they could mush 	I could be mushing
you could be mushing
he could be mushing
we could be mushing
you could be mushing
they could be mushing	I could have mushed
you could have mushed
he 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
he 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 couldn't mush
you couldn't mush
he couldn't mush
we couldn't mush
you couldn't mush
they couldn't mush 	I couldn't be mushing
you couldn't be mushing
he couldn't be mushing
we couldn't be mushing
you couldn't be mushing
they couldn't be mushing	I couldn't have mushed
you couldn't have mushed
he couldn't have mushed
we couldn't have mushed
you couldn't have mushed
they couldn't have mushed	I couldn't have been mushing
you couldn't have been mushing
he couldn't have been mushing
we couldn't have been mushing
you couldn't have been mushing
they couldn't have been mushing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mush?
could you mush?
could he mush?
could we mush?
could you mush?
could they mush? 	could I be mushing?
could you be mushing?
could he be mushing?
could we be mushing?
could you be mushing?
could they be mushing? 	could I have mushed?
could you have mushed?
could he 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 he 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 	
couldn't I mush?
couldn't you mush?
couldn't he mush?
couldn't we mush?
couldn't you mush?
couldn't they mush? 	couldn't I be mushing?
couldn't you be mushing?
couldn't he be mushing?
couldn't we be mushing?
couldn't you be mushing?
couldn't they be mushing? 	couldn't I have mushed?
couldn't you have mushed?
couldn't he have mushed?
couldn't we have mushed?
couldn't you have mushed?
couldn't they have mushed? 	couldn't I have been mushing?
couldn't you have been mushing?
couldn't he have been mushing?
couldn't we have been mushing?
couldn't you have been mushing?
couldn't they have been mushing?