could preedit
Regular verb: preedit - preedited- preedited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preedit
you could preedit
she could preedit
we could preedit
you could preedit
they could preedit 	I could be preediting
you could be preediting
she could be preediting
we could be preediting
you could be preediting
they could be preediting	I could have preedited
you could have preedited
she could have preedited
we could have preedited
you could have preedited
they could have preedited	I could have been preediting
you could have been preediting
she could have been preediting
we could have been preediting
you could have been preediting
they could have been preediting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't preedit
you couldn't preedit
she couldn't preedit
we couldn't preedit
you couldn't preedit
they couldn't preedit 	I couldn't be preediting
you couldn't be preediting
she couldn't be preediting
we couldn't be preediting
you couldn't be preediting
they couldn't be preediting	I couldn't have preedited
you couldn't have preedited
she couldn't have preedited
we couldn't have preedited
you couldn't have preedited
they couldn't have preedited	I couldn't have been preediting
you couldn't have been preediting
she couldn't have been preediting
we couldn't have been preediting
you couldn't have been preediting
they couldn't have been preediting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I preedit?
could you preedit?
could she preedit?
could we preedit?
could you preedit?
could they preedit? 	could I be preediting?
could you be preediting?
could she be preediting?
could we be preediting?
could you be preediting?
could they be preediting? 	could I have preedited?
could you have preedited?
could she have preedited?
could we have preedited?
could you have preedited?
could they have preedited? 	could I have been preediting?
could you have been preediting?
could she have been preediting?
could we have been preediting?
could you have been preediting?
could they have been preediting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I preedit?
couldn't you preedit?
couldn't she preedit?
couldn't we preedit?
couldn't you preedit?
couldn't they preedit? 	couldn't I be preediting?
couldn't you be preediting?
couldn't she be preediting?
couldn't we be preediting?
couldn't you be preediting?
couldn't they be preediting? 	couldn't I have preedited?
couldn't you have preedited?
couldn't she have preedited?
couldn't we have preedited?
couldn't you have preedited?
couldn't they have preedited? 	couldn't I have been preediting?
couldn't you have been preediting?
couldn't she have been preediting?
couldn't we have been preediting?
couldn't you have been preediting?
couldn't they have been preediting?