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