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