English verb conjugation
SHOULD MUSS

Regular verb: muss - mussed - mussed

Affirmation

Simple form	V-ing form
I'd muss you'd muss he'd muss we'd muss you'd muss they'd muss	I'd be mussing you'd be mussing he'd be mussing we'd be mussing you'd be mussing they'd be mussing
Perfect	V-ing perfect
I should've mussed you should've mussed he should've mussed we should've mussed you should've mussed they should've mussed	I should've been mussing you should've been mussing he should've been mussing we should've been mussing you should've been mussing they should've been mussing

Negation

Simple form	V-ing form
I shouldn't muss you shouldn't muss he shouldn't muss we shouldn't muss you shouldn't muss they shouldn't muss	I shouldn't be mussing you shouldn't be mussing he shouldn't be mussing we shouldn't be mussing you shouldn't be mussing they shouldn't be mussing
Perfect	V-ing perfect
I shouldn't have mussed you shouldn't have mussed he shouldn't have mussed we shouldn't have mussed you shouldn't have mussed they shouldn't have mussed	I shouldn't have been mussing you shouldn't have been mussing he shouldn't have been mussing we shouldn't have been mussing you shouldn't have been mussing they shouldn't have been mussing

Interrogative form

Simple form	V-ing form
should I muss? should you muss? should he muss? should we muss? should you muss? should they muss?	should I be mussing? should you be mussing? should he be mussing? should we be mussing? should you be mussing? should they be mussing?
Perfect	V-ing perfect
should I have mussed? should you have mussed? should he have mussed? should we have mussed? should you have mussed? should they have mussed?	should I have been mussing? should you have been mussing? should he have been mussing? should we have been mussing? should you have been mussing? should they have been mussing?

Interro-negative form

Simple form	V-ing form
shouldn't I muss? shouldn't you muss? shouldn't he muss? shouldn't we muss? shouldn't you muss? shouldn't they muss?	shouldn't I be mussing? shouldn't you be mussing? shouldn't he be mussing? shouldn't we be mussing? shouldn't you be mussing? shouldn't they be mussing?
Perfect	V-ing perfect
shouldn't I have mussed? shouldn't you have mussed? shouldn't he have mussed? shouldn't we have mussed? shouldn't you have mussed? shouldn't they have mussed?	shouldn't I have been mussing? shouldn't you have been mussing? shouldn't he have been mussing? shouldn't we have been mussing? shouldn't you have been mussing? shouldn't they have been mussing?