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 couldn't ear.htm you couldn't ear.htm he couldn't ear.htm we couldn't ear.htm you couldn't ear.htm they couldn't ear.htm
V-ing form
I couldn't be ear.htming you couldn't be ear.htming he couldn't be ear.htming we couldn't be ear.htming you couldn't be ear.htming they couldn't be ear.htming
Perfect
I couldn't have ear.htmed you couldn't have ear.htmed he couldn't have ear.htmed we couldn't have ear.htmed you couldn't have ear.htmed they couldn't have ear.htmed
V-ing perfect
I couldn't have been ear.htming you couldn't have been ear.htming he couldn't have been ear.htming we couldn't have been ear.htming you couldn't have been ear.htming they couldn't 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
couldn't I ear.htm? couldn't you ear.htm? couldn't he ear.htm? couldn't we ear.htm? couldn't you ear.htm? couldn't they ear.htm?
V-ing form
couldn't I be ear.htming? couldn't you be ear.htming? couldn't he be ear.htming? couldn't we be ear.htming? couldn't you be ear.htming? couldn't they be ear.htming?
Perfect
couldn't I have ear.htmed? couldn't you have ear.htmed? couldn't he have ear.htmed? couldn't we have ear.htmed? couldn't you have ear.htmed? couldn't they have ear.htmed?
V-ing perfect
couldn't I have been ear.htming? couldn't you have been ear.htming? couldn't he have been ear.htming? couldn't we have been ear.htming? couldn't you have been ear.htming? couldn't they have been ear.htming?