could prediscuss
Regular verb: prediscuss - prediscussed- prediscussed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prediscuss
you could prediscuss
he could prediscuss
we could prediscuss
you could prediscuss
they could prediscuss 	I could be prediscussing
you could be prediscussing
he could be prediscussing
we could be prediscussing
you could be prediscussing
they could be prediscussing	I could have prediscussed
you could have prediscussed
he could have prediscussed
we could have prediscussed
you could have prediscussed
they could have prediscussed	I could have been prediscussing
you could have been prediscussing
he could have been prediscussing
we could have been prediscussing
you could have been prediscussing
they could have been prediscussing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prediscuss
you couldn't prediscuss
he couldn't prediscuss
we couldn't prediscuss
you couldn't prediscuss
they couldn't prediscuss 	I couldn't be prediscussing
you couldn't be prediscussing
he couldn't be prediscussing
we couldn't be prediscussing
you couldn't be prediscussing
they couldn't be prediscussing	I couldn't have prediscussed
you couldn't have prediscussed
he couldn't have prediscussed
we couldn't have prediscussed
you couldn't have prediscussed
they couldn't have prediscussed	I couldn't have been prediscussing
you couldn't have been prediscussing
he couldn't have been prediscussing
we couldn't have been prediscussing
you couldn't have been prediscussing
they couldn't have been prediscussing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prediscuss?
could you prediscuss?
could he prediscuss?
could we prediscuss?
could you prediscuss?
could they prediscuss? 	could I be prediscussing?
could you be prediscussing?
could he be prediscussing?
could we be prediscussing?
could you be prediscussing?
could they be prediscussing? 	could I have prediscussed?
could you have prediscussed?
could he have prediscussed?
could we have prediscussed?
could you have prediscussed?
could they have prediscussed? 	could I have been prediscussing?
could you have been prediscussing?
could he have been prediscussing?
could we have been prediscussing?
could you have been prediscussing?
could they have been prediscussing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prediscuss?
couldn't you prediscuss?
couldn't he prediscuss?
couldn't we prediscuss?
couldn't you prediscuss?
couldn't they prediscuss? 	couldn't I be prediscussing?
couldn't you be prediscussing?
couldn't he be prediscussing?
couldn't we be prediscussing?
couldn't you be prediscussing?
couldn't they be prediscussing? 	couldn't I have prediscussed?
couldn't you have prediscussed?
couldn't he have prediscussed?
couldn't we have prediscussed?
couldn't you have prediscussed?
couldn't they have prediscussed? 	couldn't I have been prediscussing?
couldn't you have been prediscussing?
couldn't he have been prediscussing?
couldn't we have been prediscussing?
couldn't you have been prediscussing?
couldn't they have been prediscussing?