I could apparel you could apparel he could apparel we could apparel you could apparel they could apparel
V-ing form
I could be appareling you could be appareling he could be appareling we could be appareling you could be appareling they could be appareling
Perfect
I could have appareled you could have appareled he could have appareled we could have appareled you could have appareled they could have appareled
V-ing perfect
I could have been appareling you could have been appareling he could have been appareling we could have been appareling you could have been appareling they could have been appareling
Negation
Simple form
I could not apparel you could not apparel he could not apparel we could not apparel you could not apparel they could not apparel
V-ing form
I could not be appareling you could not be appareling he could not be appareling we could not be appareling you could not be appareling they could not be appareling
Perfect
I could not have appareled you could not have appareled he could not have appareled we could not have appareled you could not have appareled they could not have appareled
V-ing perfect
I could not have been appareling you could not have been appareling he could not have been appareling we could not have been appareling you could not have been appareling they could not have been appareling
Interrogative form
Simple form
could I apparel? could you apparel? could he apparel? could we apparel? could you apparel? could they apparel?
V-ing form
could I be appareling? could you be appareling? could he be appareling? could we be appareling? could you be appareling? could they be appareling?
Perfect
could I have appareled? could you have appareled? could he have appareled? could we have appareled? could you have appareled? could they have appareled?
V-ing perfect
could I have been appareling? could you have been appareling? could he have been appareling? could we have been appareling? could you have been appareling? could they have been appareling?
Interro-negative form
Simple form
could I not apparel? could you not apparel? could he not apparel? could we not apparel? could you not apparel? could they not apparel?
V-ing form
could I not be appareling? could you not be appareling? could he not be appareling? could we not be appareling? could you not be appareling? could they not be appareling?
Perfect
could I not have appareled? could you not have appareled? could he not have appareled? could we not have appareled? could you not have appareled? could they not have appareled?
V-ing perfect
could I not have been appareling? could you not have been appareling? could he not have been appareling? could we not have been appareling? could you not have been appareling? could they not have been appareling?