should stagnate
Regular verb: stagnate - stagnated- stagnated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd stagnate
you'd stagnate
she'd stagnate
we'd stagnate
you'd stagnate
they'd stagnate 	I'd be stagnating
you'd be stagnating
she'd be stagnating
we'd be stagnating
you'd be stagnating
they'd be stagnating	I should've stagnated
you should've stagnated
she should've stagnated
we should've stagnated
you should've stagnated
they should've stagnated	I should've been stagnating
you should've been stagnating
she should've been stagnating
we should've been stagnating
you should've been stagnating
they should've been stagnating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't stagnate
you shouldn't stagnate
she shouldn't stagnate
we shouldn't stagnate
you shouldn't stagnate
they shouldn't stagnate 	I shouldn't be stagnating
you shouldn't be stagnating
she shouldn't be stagnating
we shouldn't be stagnating
you shouldn't be stagnating
they shouldn't be stagnating	I shouldn't have stagnated
you shouldn't have stagnated
she shouldn't have stagnated
we shouldn't have stagnated
you shouldn't have stagnated
they shouldn't have stagnated	I shouldn't have been stagnating
you shouldn't have been stagnating
she shouldn't have been stagnating
we shouldn't have been stagnating
you shouldn't have been stagnating
they shouldn't have been stagnating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I stagnate?
should you stagnate?
should she stagnate?
should we stagnate?
should you stagnate?
should they stagnate? 	should I be stagnating?
should you be stagnating?
should she be stagnating?
should we be stagnating?
should you be stagnating?
should they be stagnating? 	should I have stagnated?
should you have stagnated?
should she have stagnated?
should we have stagnated?
should you have stagnated?
should they have stagnated? 	should I have been stagnating?
should you have been stagnating?
should she have been stagnating?
should we have been stagnating?
should you have been stagnating?
should they have been stagnating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I stagnate?
shouldn't you stagnate?
shouldn't she stagnate?
shouldn't we stagnate?
shouldn't you stagnate?
shouldn't they stagnate? 	shouldn't I be stagnating?
shouldn't you be stagnating?
shouldn't she be stagnating?
shouldn't we be stagnating?
shouldn't you be stagnating?
shouldn't they be stagnating? 	shouldn't I have stagnated?
shouldn't you have stagnated?
shouldn't she have stagnated?
shouldn't we have stagnated?
shouldn't you have stagnated?
shouldn't they have stagnated? 	shouldn't I have been stagnating?
shouldn't you have been stagnating?
shouldn't she have been stagnating?
shouldn't we have been stagnating?
shouldn't you have been stagnating?
shouldn't they have been stagnating?