should diminish
Regular verb: diminish - diminished- diminished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd diminish
you'd diminish
he'd diminish
we'd diminish
you'd diminish
they'd diminish 	I'd be diminishing
you'd be diminishing
he'd be diminishing
we'd be diminishing
you'd be diminishing
they'd be diminishing	I should've diminished
you should've diminished
he should've diminished
we should've diminished
you should've diminished
they should've diminished	I should've been diminishing
you should've been diminishing
he should've been diminishing
we should've been diminishing
you should've been diminishing
they should've been diminishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't diminish
you shouldn't diminish
he shouldn't diminish
we shouldn't diminish
you shouldn't diminish
they shouldn't diminish 	I shouldn't be diminishing
you shouldn't be diminishing
he shouldn't be diminishing
we shouldn't be diminishing
you shouldn't be diminishing
they shouldn't be diminishing	I shouldn't have diminished
you shouldn't have diminished
he shouldn't have diminished
we shouldn't have diminished
you shouldn't have diminished
they shouldn't have diminished	I shouldn't have been diminishing
you shouldn't have been diminishing
he shouldn't have been diminishing
we shouldn't have been diminishing
you shouldn't have been diminishing
they shouldn't have been diminishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I diminish?
should you diminish?
should he diminish?
should we diminish?
should you diminish?
should they diminish? 	should I be diminishing?
should you be diminishing?
should he be diminishing?
should we be diminishing?
should you be diminishing?
should they be diminishing? 	should I have diminished?
should you have diminished?
should he have diminished?
should we have diminished?
should you have diminished?
should they have diminished? 	should I have been diminishing?
should you have been diminishing?
should he have been diminishing?
should we have been diminishing?
should you have been diminishing?
should they have been diminishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I diminish?
shouldn't you diminish?
shouldn't he diminish?
shouldn't we diminish?
shouldn't you diminish?
shouldn't they diminish? 	shouldn't I be diminishing?
shouldn't you be diminishing?
shouldn't he be diminishing?
shouldn't we be diminishing?
shouldn't you be diminishing?
shouldn't they be diminishing? 	shouldn't I have diminished?
shouldn't you have diminished?
shouldn't he have diminished?
shouldn't we have diminished?
shouldn't you have diminished?
shouldn't they have diminished? 	shouldn't I have been diminishing?
shouldn't you have been diminishing?
shouldn't he have been diminishing?
shouldn't we have been diminishing?
shouldn't you have been diminishing?
shouldn't they have been diminishing?