can coffin
Regular verb: coffin - coffined- coffined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can coffin
you can coffin
she can coffin
we can coffin
you can coffin
they can coffin 	I can be coffining
you can be coffining
she can be coffining
we can be coffining
you can be coffining
they can be coffining	I can have coffined
you can have coffined
she can have coffined
we can have coffined
you can have coffined
they can have coffined	I can have been coffining
you can have been coffining
she can have been coffining
we can have been coffining
you can have been coffining
they can have been coffining	

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

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

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