could preach
Regular verb: preach - preached- preached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preach
you could preach
he could preach
we could preach
you could preach
they could preach 	I could be preaching
you could be preaching
he could be preaching
we could be preaching
you could be preaching
they could be preaching	I could have preached
you could have preached
he could have preached
we could have preached
you could have preached
they could have preached	I could have been preaching
you could have been preaching
he could have been preaching
we could have been preaching
you could have been preaching
they could have been preaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't preach
you couldn't preach
he couldn't preach
we couldn't preach
you couldn't preach
they couldn't preach 	I couldn't be preaching
you couldn't be preaching
he couldn't be preaching
we couldn't be preaching
you couldn't be preaching
they couldn't be preaching	I couldn't have preached
you couldn't have preached
he couldn't have preached
we couldn't have preached
you couldn't have preached
they couldn't have preached	I couldn't have been preaching
you couldn't have been preaching
he couldn't have been preaching
we couldn't have been preaching
you couldn't have been preaching
they couldn't have been preaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I preach?
could you preach?
could he preach?
could we preach?
could you preach?
could they preach? 	could I be preaching?
could you be preaching?
could he be preaching?
could we be preaching?
could you be preaching?
could they be preaching? 	could I have preached?
could you have preached?
could he have preached?
could we have preached?
could you have preached?
could they have preached? 	could I have been preaching?
could you have been preaching?
could he have been preaching?
could we have been preaching?
could you have been preaching?
could they have been preaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I preach?
couldn't you preach?
couldn't he preach?
couldn't we preach?
couldn't you preach?
couldn't they preach? 	couldn't I be preaching?
couldn't you be preaching?
couldn't he be preaching?
couldn't we be preaching?
couldn't you be preaching?
couldn't they be preaching? 	couldn't I have preached?
couldn't you have preached?
couldn't he have preached?
couldn't we have preached?
couldn't you have preached?
couldn't they have preached? 	couldn't I have been preaching?
couldn't you have been preaching?
couldn't he have been preaching?
couldn't we have been preaching?
couldn't you have been preaching?
couldn't they have been preaching?