can mush
Regular verb: mush - mushed- mushed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot mush
you cannot mush
he cannot mush
we cannot mush
you cannot mush
they cannot mush 	I cannot be mushing
you cannot be mushing
he cannot be mushing
we cannot be mushing
you cannot be mushing
they cannot be mushing	I cannot have mushed
you cannot have mushed
he cannot have mushed
we cannot have mushed
you cannot have mushed
they cannot have mushed	I cannot have been mushing
you cannot have been mushing
he cannot have been mushing
we cannot have been mushing
you cannot have been mushing
they cannot have been mushing	

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

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