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