should burrow
Regular verb: burrow - burrowed- burrowed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not burrow
you should not burrow
she should not burrow
we should not burrow
you should not burrow
they should not burrow 	I should not be burrowing
you should not be burrowing
she should not be burrowing
we should not be burrowing
you should not be burrowing
they should not be burrowing	I should not have burrowed
you should not have burrowed
she should not have burrowed
we should not have burrowed
you should not have burrowed
they should not have burrowed	I should not have been burrowing
you should not have been burrowing
she should not have been burrowing
we should not have been burrowing
you should not have been burrowing
they should not have been burrowing	

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

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