should coffin
Regular verb: coffin - coffined- coffined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd coffin
you'd coffin
she'd coffin
we'd coffin
you'd coffin
they'd coffin 	I'd be coffining
you'd be coffining
she'd be coffining
we'd be coffining
you'd be coffining
they'd be coffining	I should've coffined
you should've coffined
she should've coffined
we should've coffined
you should've coffined
they should've coffined	I should've been coffining
you should've been coffining
she should've been coffining
we should've been coffining
you should've been coffining
they should've been coffining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't coffin
you shouldn't coffin
she shouldn't coffin
we shouldn't coffin
you shouldn't coffin
they shouldn't coffin 	I shouldn't be coffining
you shouldn't be coffining
she shouldn't be coffining
we shouldn't be coffining
you shouldn't be coffining
they shouldn't be coffining	I shouldn't have coffined
you shouldn't have coffined
she shouldn't have coffined
we shouldn't have coffined
you shouldn't have coffined
they shouldn't have coffined	I shouldn't have been coffining
you shouldn't have been coffining
she shouldn't have been coffining
we shouldn't have been coffining
you shouldn't have been coffining
they shouldn't have been coffining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I coffin?
should you coffin?
should she coffin?
should we coffin?
should you coffin?
should they coffin? 	should I be coffining?
should you be coffining?
should she be coffining?
should we be coffining?
should you be coffining?
should they be coffining? 	should I have coffined?
should you have coffined?
should she have coffined?
should we have coffined?
should you have coffined?
should they have coffined? 	should I have been coffining?
should you have been coffining?
should she have been coffining?
should we have been coffining?
should you have been coffining?
should they have been coffining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I coffin?
shouldn't you coffin?
shouldn't she coffin?
shouldn't we coffin?
shouldn't you coffin?
shouldn't they coffin? 	shouldn't I be coffining?
shouldn't you be coffining?
shouldn't she be coffining?
shouldn't we be coffining?
shouldn't you be coffining?
shouldn't they be coffining? 	shouldn't I have coffined?
shouldn't you have coffined?
shouldn't she have coffined?
shouldn't we have coffined?
shouldn't you have coffined?
shouldn't they have coffined? 	shouldn't I have been coffining?
shouldn't you have been coffining?
shouldn't she have been coffining?
shouldn't we have been coffining?
shouldn't you have been coffining?
shouldn't they have been coffining?