could preconceive
Regular verb: preconceive - preconceived- preconceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preconceive
you could preconceive
he could preconceive
we could preconceive
you could preconceive
they could preconceive 	I could be preconceiving
you could be preconceiving
he could be preconceiving
we could be preconceiving
you could be preconceiving
they could be preconceiving	I could have preconceived
you could have preconceived
he could have preconceived
we could have preconceived
you could have preconceived
they could have preconceived	I could have been preconceiving
you could have been preconceiving
he could have been preconceiving
we could have been preconceiving
you could have been preconceiving
they could have been preconceiving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't preconceive
you couldn't preconceive
he couldn't preconceive
we couldn't preconceive
you couldn't preconceive
they couldn't preconceive 	I couldn't be preconceiving
you couldn't be preconceiving
he couldn't be preconceiving
we couldn't be preconceiving
you couldn't be preconceiving
they couldn't be preconceiving	I couldn't have preconceived
you couldn't have preconceived
he couldn't have preconceived
we couldn't have preconceived
you couldn't have preconceived
they couldn't have preconceived	I couldn't have been preconceiving
you couldn't have been preconceiving
he couldn't have been preconceiving
we couldn't have been preconceiving
you couldn't have been preconceiving
they couldn't have been preconceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I preconceive?
could you preconceive?
could he preconceive?
could we preconceive?
could you preconceive?
could they preconceive? 	could I be preconceiving?
could you be preconceiving?
could he be preconceiving?
could we be preconceiving?
could you be preconceiving?
could they be preconceiving? 	could I have preconceived?
could you have preconceived?
could he have preconceived?
could we have preconceived?
could you have preconceived?
could they have preconceived? 	could I have been preconceiving?
could you have been preconceiving?
could he have been preconceiving?
could we have been preconceiving?
could you have been preconceiving?
could they have been preconceiving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I preconceive?
couldn't you preconceive?
couldn't he preconceive?
couldn't we preconceive?
couldn't you preconceive?
couldn't they preconceive? 	couldn't I be preconceiving?
couldn't you be preconceiving?
couldn't he be preconceiving?
couldn't we be preconceiving?
couldn't you be preconceiving?
couldn't they be preconceiving? 	couldn't I have preconceived?
couldn't you have preconceived?
couldn't he have preconceived?
couldn't we have preconceived?
couldn't you have preconceived?
couldn't they have preconceived? 	couldn't I have been preconceiving?
couldn't you have been preconceiving?
couldn't he have been preconceiving?
couldn't we have been preconceiving?
couldn't you have been preconceiving?
couldn't they have been preconceiving?