could preach
Regular verb: preach - preached- preached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preach
you could preach
she could preach
we could preach
you could preach
they could preach 	I could be preaching
you could be preaching
she could be preaching
we could be preaching
you could be preaching
they could be preaching	I could have preached
you could have preached
she 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
she 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
she 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
she 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
she 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
she 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 she preach?
could we preach?
could you preach?
could they preach? 	could I be preaching?
could you be preaching?
could she be preaching?
could we be preaching?
could you be preaching?
could they be preaching? 	could I have preached?
could you have preached?
could she 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 she 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 she 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 she 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 she 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 she have been preaching?
couldn't we have been preaching?
couldn't you have been preaching?
couldn't they have been preaching?