can burrow
Regular verb: burrow - burrowed- burrowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can burrow
you can burrow
she can burrow
we can burrow
you can burrow
they can burrow 	I can be burrowing
you can be burrowing
she can be burrowing
we can be burrowing
you can be burrowing
they can be burrowing	I can have burrowed
you can have burrowed
she can have burrowed
we can have burrowed
you can have burrowed
they can have burrowed	I can have been burrowing
you can have been burrowing
she can have been burrowing
we can have been burrowing
you can have been burrowing
they can have been burrowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't burrow
you can't burrow
she can't burrow
we can't burrow
you can't burrow
they can't burrow 	I can't be burrowing
you can't be burrowing
she can't be burrowing
we can't be burrowing
you can't be burrowing
they can't be burrowing	I can't have burrowed
you can't have burrowed
she can't have burrowed
we can't have burrowed
you can't have burrowed
they can't have burrowed	I can't have been burrowing
you can't have been burrowing
she can't have been burrowing
we can't have been burrowing
you can't have been burrowing
they can't have been burrowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I burrow?
can you burrow?
can she burrow?
can we burrow?
can you burrow?
can they burrow? 	can I be burrowing?
can you be burrowing?
can she be burrowing?
can we be burrowing?
can you be burrowing?
can they be burrowing? 	can I have burrowed?
can you have burrowed?
can she have burrowed?
can we have burrowed?
can you have burrowed?
can they have burrowed? 	can I have been burrowing?
can you have been burrowing?
can she have been burrowing?
can we have been burrowing?
can you have been burrowing?
can they have been burrowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I burrow?
can't you burrow?
can't she burrow?
can't we burrow?
can't you burrow?
can't they burrow? 	can't I be burrowing?
can't you be burrowing?
can't she be burrowing?
can't we be burrowing?
can't you be burrowing?
can't they be burrowing? 	can't I have burrowed?
can't you have burrowed?
can't she have burrowed?
can't we have burrowed?
can't you have burrowed?
can't they have burrowed? 	can't I have been burrowing?
can't you have been burrowing?
can't she have been burrowing?
can't we have been burrowing?
can't you have been burrowing?
can't they have been burrowing?