should muscle
Regular verb: muscle - muscled- muscled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd muscle
you'd muscle
he'd muscle
we'd muscle
you'd muscle
they'd muscle 	I'd be muscling
you'd be muscling
he'd be muscling
we'd be muscling
you'd be muscling
they'd be muscling	I should've muscled
you should've muscled
he should've muscled
we should've muscled
you should've muscled
they should've muscled	I should've been muscling
you should've been muscling
he should've been muscling
we should've been muscling
you should've been muscling
they should've been muscling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't muscle
you shouldn't muscle
he shouldn't muscle
we shouldn't muscle
you shouldn't muscle
they shouldn't muscle 	I shouldn't be muscling
you shouldn't be muscling
he shouldn't be muscling
we shouldn't be muscling
you shouldn't be muscling
they shouldn't be muscling	I shouldn't have muscled
you shouldn't have muscled
he shouldn't have muscled
we shouldn't have muscled
you shouldn't have muscled
they shouldn't have muscled	I shouldn't have been muscling
you shouldn't have been muscling
he shouldn't have been muscling
we shouldn't have been muscling
you shouldn't have been muscling
they shouldn't have been muscling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I muscle?
should you muscle?
should he muscle?
should we muscle?
should you muscle?
should they muscle? 	should I be muscling?
should you be muscling?
should he be muscling?
should we be muscling?
should you be muscling?
should they be muscling? 	should I have muscled?
should you have muscled?
should he have muscled?
should we have muscled?
should you have muscled?
should they have muscled? 	should I have been muscling?
should you have been muscling?
should he have been muscling?
should we have been muscling?
should you have been muscling?
should they have been muscling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I muscle?
shouldn't you muscle?
shouldn't he muscle?
shouldn't we muscle?
shouldn't you muscle?
shouldn't they muscle? 	shouldn't I be muscling?
shouldn't you be muscling?
shouldn't he be muscling?
shouldn't we be muscling?
shouldn't you be muscling?
shouldn't they be muscling? 	shouldn't I have muscled?
shouldn't you have muscled?
shouldn't he have muscled?
shouldn't we have muscled?
shouldn't you have muscled?
shouldn't they have muscled? 	shouldn't I have been muscling?
shouldn't you have been muscling?
shouldn't he have been muscling?
shouldn't we have been muscling?
shouldn't you have been muscling?
shouldn't they have been muscling?