can mash
Regular verb: mash - mashed- mashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can mash
you can mash
he can mash
we can mash
you can mash
they can mash 	I can be mashing
you can be mashing
he can be mashing
we can be mashing
you can be mashing
they can be mashing	I can have mashed
you can have mashed
he can have mashed
we can have mashed
you can have mashed
they can have mashed	I can have been mashing
you can have been mashing
he can have been mashing
we can have been mashing
you can have been mashing
they can have been mashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't mash
you can't mash
he can't mash
we can't mash
you can't mash
they can't mash 	I can't be mashing
you can't be mashing
he can't be mashing
we can't be mashing
you can't be mashing
they can't be mashing	I can't have mashed
you can't have mashed
he can't have mashed
we can't have mashed
you can't have mashed
they can't have mashed	I can't have been mashing
you can't have been mashing
he can't have been mashing
we can't have been mashing
you can't have been mashing
they can't have been mashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I mash?
can you mash?
can he mash?
can we mash?
can you mash?
can they mash? 	can I be mashing?
can you be mashing?
can he be mashing?
can we be mashing?
can you be mashing?
can they be mashing? 	can I have mashed?
can you have mashed?
can he have mashed?
can we have mashed?
can you have mashed?
can they have mashed? 	can I have been mashing?
can you have been mashing?
can he have been mashing?
can we have been mashing?
can you have been mashing?
can they have been mashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I mash?
can't you mash?
can't he mash?
can't we mash?
can't you mash?
can't they mash? 	can't I be mashing?
can't you be mashing?
can't he be mashing?
can't we be mashing?
can't you be mashing?
can't they be mashing? 	can't I have mashed?
can't you have mashed?
can't he have mashed?
can't we have mashed?
can't you have mashed?
can't they have mashed? 	can't I have been mashing?
can't you have been mashing?
can't he have been mashing?
can't we have been mashing?
can't you have been mashing?
can't they have been mashing?