Conjugação do verbo inglês
COULD CAVERN

Verbo regular: cavern - caverned - caverned

Afirmação

Forma simple	Forma com V-ing
I could cavern you could cavern he could cavern we could cavern you could cavern they could cavern	I could be caverning you could be caverning he could be caverning we could be caverning you could be caverning they could be caverning
Perfeito	Perfeito com V-ing
I could have caverned you could have caverned he could have caverned we could have caverned you could have caverned they could have caverned	I could have been caverning you could have been caverning he could have been caverning we could have been caverning you could have been caverning they could have been caverning

Negação

Forma simple	Forma com V-ing
I couldn't cavern you couldn't cavern he couldn't cavern we couldn't cavern you couldn't cavern they couldn't cavern	I couldn't be caverning you couldn't be caverning he couldn't be caverning we couldn't be caverning you couldn't be caverning they couldn't be caverning
Perfeito	Perfeito com V-ing
I couldn't have caverned you couldn't have caverned he couldn't have caverned we couldn't have caverned you couldn't have caverned they couldn't have caverned	I couldn't have been caverning you couldn't have been caverning he couldn't have been caverning we couldn't have been caverning you couldn't have been caverning they couldn't have been caverning

Forma interrogativa

Forma simple	Forma com V-ing
could I cavern? could you cavern? could he cavern? could we cavern? could you cavern? could they cavern?	could I be caverning? could you be caverning? could he be caverning? could we be caverning? could you be caverning? could they be caverning?
Perfeito	Perfeito com V-ing
could I have caverned? could you have caverned? could he have caverned? could we have caverned? could you have caverned? could they have caverned?	could I have been caverning? could you have been caverning? could he have been caverning? could we have been caverning? could you have been caverning? could they have been caverning?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I cavern? couldn't you cavern? couldn't he cavern? couldn't we cavern? couldn't you cavern? couldn't they cavern?	couldn't I be caverning? couldn't you be caverning? couldn't he be caverning? couldn't we be caverning? couldn't you be caverning? couldn't they be caverning?
Perfeito	Perfeito com V-ing
couldn't I have caverned? couldn't you have caverned? couldn't he have caverned? couldn't we have caverned? couldn't you have caverned? couldn't they have caverned?	couldn't I have been caverning? couldn't you have been caverning? couldn't he have been caverning? couldn't we have been caverning? couldn't you have been caverning? couldn't they have been caverning?