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 couldn't apparel you couldn't apparel he couldn't apparel we couldn't apparel you couldn't apparel they couldn't apparel
V-ing form
I couldn't be appareling you couldn't be appareling he couldn't be appareling we couldn't be appareling you couldn't be appareling they couldn't be appareling
Perfect
I couldn't have appareled you couldn't have appareled he couldn't have appareled we couldn't have appareled you couldn't have appareled they couldn't have appareled
V-ing perfect
I couldn't have been appareling you couldn't have been appareling he couldn't have been appareling we couldn't have been appareling you couldn't have been appareling they couldn't 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
couldn't I apparel? couldn't you apparel? couldn't he apparel? couldn't we apparel? couldn't you apparel? couldn't they apparel?
V-ing form
couldn't I be appareling? couldn't you be appareling? couldn't he be appareling? couldn't we be appareling? couldn't you be appareling? couldn't they be appareling?
Perfect
couldn't I have appareled? couldn't you have appareled? couldn't he have appareled? couldn't we have appareled? couldn't you have appareled? couldn't they have appareled?
V-ing perfect
couldn't I have been appareling? couldn't you have been appareling? couldn't he have been appareling? couldn't we have been appareling? couldn't you have been appareling? couldn't they have been appareling?