I could reappear you could reappear he could reappear we could reappear you could reappear they could reappear
V-ing form
I could be reappearing you could be reappearing he could be reappearing we could be reappearing you could be reappearing they could be reappearing
Perfect
I could have reappeared you could have reappeared he could have reappeared we could have reappeared you could have reappeared they could have reappeared
V-ing perfect
I could have been reappearing you could have been reappearing he could have been reappearing we could have been reappearing you could have been reappearing they could have been reappearing
Negation
Simple form
I couldn't reappear you couldn't reappear he couldn't reappear we couldn't reappear you couldn't reappear they couldn't reappear
V-ing form
I couldn't be reappearing you couldn't be reappearing he couldn't be reappearing we couldn't be reappearing you couldn't be reappearing they couldn't be reappearing
Perfect
I couldn't have reappeared you couldn't have reappeared he couldn't have reappeared we couldn't have reappeared you couldn't have reappeared they couldn't have reappeared
V-ing perfect
I couldn't have been reappearing you couldn't have been reappearing he couldn't have been reappearing we couldn't have been reappearing you couldn't have been reappearing they couldn't have been reappearing
Interrogative form
Simple form
could I reappear? could you reappear? could he reappear? could we reappear? could you reappear? could they reappear?
V-ing form
could I be reappearing? could you be reappearing? could he be reappearing? could we be reappearing? could you be reappearing? could they be reappearing?
Perfect
could I have reappeared? could you have reappeared? could he have reappeared? could we have reappeared? could you have reappeared? could they have reappeared?
V-ing perfect
could I have been reappearing? could you have been reappearing? could he have been reappearing? could we have been reappearing? could you have been reappearing? could they have been reappearing?
Interro-negative form
Simple form
couldn't I reappear? couldn't you reappear? couldn't he reappear? couldn't we reappear? couldn't you reappear? couldn't they reappear?
V-ing form
couldn't I be reappearing? couldn't you be reappearing? couldn't he be reappearing? couldn't we be reappearing? couldn't you be reappearing? couldn't they be reappearing?
Perfect
couldn't I have reappeared? couldn't you have reappeared? couldn't he have reappeared? couldn't we have reappeared? couldn't you have reappeared? couldn't they have reappeared?
V-ing perfect
couldn't I have been reappearing? couldn't you have been reappearing? couldn't he have been reappearing? couldn't we have been reappearing? couldn't you have been reappearing? couldn't they have been reappearing?