Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could ear.htm you could ear.htm he could ear.htm we could ear.htm you could ear.htm they could ear.htm
V-ing form
I could be ear.htming you could be ear.htming he could be ear.htming we could be ear.htming you could be ear.htming they could be ear.htming
Perfect
I could have ear.htmed you could have ear.htmed he could have ear.htmed we could have ear.htmed you could have ear.htmed they could have ear.htmed
V-ing perfect
I could have been ear.htming you could have been ear.htming he could have been ear.htming we could have been ear.htming you could have been ear.htming they could have been ear.htming
Negation
Simple form
I could not ear.htm you could not ear.htm he could not ear.htm we could not ear.htm you could not ear.htm they could not ear.htm
V-ing form
I could not be ear.htming you could not be ear.htming he could not be ear.htming we could not be ear.htming you could not be ear.htming they could not be ear.htming
Perfect
I could not have ear.htmed you could not have ear.htmed he could not have ear.htmed we could not have ear.htmed you could not have ear.htmed they could not have ear.htmed
V-ing perfect
I could not have been ear.htming you could not have been ear.htming he could not have been ear.htming we could not have been ear.htming you could not have been ear.htming they could not have been ear.htming
Interrogative form
Simple form
could I ear.htm? could you ear.htm? could he ear.htm? could we ear.htm? could you ear.htm? could they ear.htm?
V-ing form
could I be ear.htming? could you be ear.htming? could he be ear.htming? could we be ear.htming? could you be ear.htming? could they be ear.htming?
Perfect
could I have ear.htmed? could you have ear.htmed? could he have ear.htmed? could we have ear.htmed? could you have ear.htmed? could they have ear.htmed?
V-ing perfect
could I have been ear.htming? could you have been ear.htming? could he have been ear.htming? could we have been ear.htming? could you have been ear.htming? could they have been ear.htming?
Interro-negative form
Simple form
could I not ear.htm? could you not ear.htm? could he not ear.htm? could we not ear.htm? could you not ear.htm? could they not ear.htm?
V-ing form
could I not be ear.htming? could you not be ear.htming? could he not be ear.htming? could we not be ear.htming? could you not be ear.htming? could they not be ear.htming?
Perfect
could I not have ear.htmed? could you not have ear.htmed? could he not have ear.htmed? could we not have ear.htmed? could you not have ear.htmed? could they not have ear.htmed?
V-ing perfect
could I not have been ear.htming? could you not have been ear.htming? could he not have been ear.htming? could we not have been ear.htming? could you not have been ear.htming? could they not have been ear.htming?