I could grunt you could grunt she could grunt we could grunt you could grunt they could grunt
Forma com V-ing
I could be grunting you could be grunting she could be grunting we could be grunting you could be grunting they could be grunting
Perfeito
I could have grunted you could have grunted she could have grunted we could have grunted you could have grunted they could have grunted
Perfeito com V-ing
I could have been grunting you could have been grunting she could have been grunting we could have been grunting you could have been grunting they could have been grunting
Negação
Forma simple
I couldn't grunt you couldn't grunt she couldn't grunt we couldn't grunt you couldn't grunt they couldn't grunt
Forma com V-ing
I couldn't be grunting you couldn't be grunting she couldn't be grunting we couldn't be grunting you couldn't be grunting they couldn't be grunting
Perfeito
I couldn't have grunted you couldn't have grunted she couldn't have grunted we couldn't have grunted you couldn't have grunted they couldn't have grunted
Perfeito com V-ing
I couldn't have been grunting you couldn't have been grunting she couldn't have been grunting we couldn't have been grunting you couldn't have been grunting they couldn't have been grunting
Forma interrogativa
Forma simple
could I grunt? could you grunt? could she grunt? could we grunt? could you grunt? could they grunt?
Forma com V-ing
could I be grunting? could you be grunting? could she be grunting? could we be grunting? could you be grunting? could they be grunting?
Perfeito
could I have grunted? could you have grunted? could she have grunted? could we have grunted? could you have grunted? could they have grunted?
Perfeito com V-ing
could I have been grunting? could you have been grunting? could she have been grunting? could we have been grunting? could you have been grunting? could they have been grunting?
Forma interro-Negação
Forma simple
couldn't I grunt? couldn't you grunt? couldn't she grunt? couldn't we grunt? couldn't you grunt? couldn't they grunt?
Forma com V-ing
couldn't I be grunting? couldn't you be grunting? couldn't she be grunting? couldn't we be grunting? couldn't you be grunting? couldn't they be grunting?
Perfeito
couldn't I have grunted? couldn't you have grunted? couldn't she have grunted? couldn't we have grunted? couldn't you have grunted? couldn't they have grunted?
Perfeito com V-ing
couldn't I have been grunting? couldn't you have been grunting? couldn't she have been grunting? couldn't we have been grunting? couldn't you have been grunting? couldn't they have been grunting?