English verb conjugation
SHOULD MAST

Regular verb: mast - masted - masted

Affirmation

Simple form	V-ing form
I'd mast you'd mast she'd mast we'd mast you'd mast they'd mast	I'd be masting you'd be masting she'd be masting we'd be masting you'd be masting they'd be masting
Perfect	V-ing perfect
I should've masted you should've masted she should've masted we should've masted you should've masted they should've masted	I should've been masting you should've been masting she should've been masting we should've been masting you should've been masting they should've been masting

Negation

Simple form	V-ing form
I shouldn't mast you shouldn't mast she shouldn't mast we shouldn't mast you shouldn't mast they shouldn't mast	I shouldn't be masting you shouldn't be masting she shouldn't be masting we shouldn't be masting you shouldn't be masting they shouldn't be masting
Perfect	V-ing perfect
I shouldn't have masted you shouldn't have masted she shouldn't have masted we shouldn't have masted you shouldn't have masted they shouldn't have masted	I shouldn't have been masting you shouldn't have been masting she shouldn't have been masting we shouldn't have been masting you shouldn't have been masting they shouldn't have been masting

Interrogative form

Simple form	V-ing form
should I mast? should you mast? should she mast? should we mast? should you mast? should they mast?	should I be masting? should you be masting? should she be masting? should we be masting? should you be masting? should they be masting?
Perfect	V-ing perfect
should I have masted? should you have masted? should she have masted? should we have masted? should you have masted? should they have masted?	should I have been masting? should you have been masting? should she have been masting? should we have been masting? should you have been masting? should they have been masting?

Interro-negative form

Simple form	V-ing form
shouldn't I mast? shouldn't you mast? shouldn't she mast? shouldn't we mast? shouldn't you mast? shouldn't they mast?	shouldn't I be masting? shouldn't you be masting? shouldn't she be masting? shouldn't we be masting? shouldn't you be masting? shouldn't they be masting?
Perfect	V-ing perfect
shouldn't I have masted? shouldn't you have masted? shouldn't she have masted? shouldn't we have masted? shouldn't you have masted? shouldn't they have masted?	shouldn't I have been masting? shouldn't you have been masting? shouldn't she have been masting? shouldn't we have been masting? shouldn't you have been masting? shouldn't they have been masting?