should blackguard
Regular verb: blackguard - blackguarded- blackguarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd blackguard
you'd blackguard
he'd blackguard
we'd blackguard
you'd blackguard
they'd blackguard 	I'd be blackguarding
you'd be blackguarding
he'd be blackguarding
we'd be blackguarding
you'd be blackguarding
they'd be blackguarding	I should've blackguarded
you should've blackguarded
he should've blackguarded
we should've blackguarded
you should've blackguarded
they should've blackguarded	I should've been blackguarding
you should've been blackguarding
he should've been blackguarding
we should've been blackguarding
you should've been blackguarding
they should've been blackguarding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't blackguard
you shouldn't blackguard
he shouldn't blackguard
we shouldn't blackguard
you shouldn't blackguard
they shouldn't blackguard 	I shouldn't be blackguarding
you shouldn't be blackguarding
he shouldn't be blackguarding
we shouldn't be blackguarding
you shouldn't be blackguarding
they shouldn't be blackguarding	I shouldn't have blackguarded
you shouldn't have blackguarded
he shouldn't have blackguarded
we shouldn't have blackguarded
you shouldn't have blackguarded
they shouldn't have blackguarded	I shouldn't have been blackguarding
you shouldn't have been blackguarding
he shouldn't have been blackguarding
we shouldn't have been blackguarding
you shouldn't have been blackguarding
they shouldn't have been blackguarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I blackguard?
should you blackguard?
should he blackguard?
should we blackguard?
should you blackguard?
should they blackguard? 	should I be blackguarding?
should you be blackguarding?
should he be blackguarding?
should we be blackguarding?
should you be blackguarding?
should they be blackguarding? 	should I have blackguarded?
should you have blackguarded?
should he have blackguarded?
should we have blackguarded?
should you have blackguarded?
should they have blackguarded? 	should I have been blackguarding?
should you have been blackguarding?
should he have been blackguarding?
should we have been blackguarding?
should you have been blackguarding?
should they have been blackguarding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I blackguard?
shouldn't you blackguard?
shouldn't he blackguard?
shouldn't we blackguard?
shouldn't you blackguard?
shouldn't they blackguard? 	shouldn't I be blackguarding?
shouldn't you be blackguarding?
shouldn't he be blackguarding?
shouldn't we be blackguarding?
shouldn't you be blackguarding?
shouldn't they be blackguarding? 	shouldn't I have blackguarded?
shouldn't you have blackguarded?
shouldn't he have blackguarded?
shouldn't we have blackguarded?
shouldn't you have blackguarded?
shouldn't they have blackguarded? 	shouldn't I have been blackguarding?
shouldn't you have been blackguarding?
shouldn't he have been blackguarding?
shouldn't we have been blackguarding?
shouldn't you have been blackguarding?
shouldn't they have been blackguarding?