I could perish you could perish he could perish we could perish you could perish they could perish
Forma com V-ing
I could be perishing you could be perishing he could be perishing we could be perishing you could be perishing they could be perishing
Perfeito
I could have perished you could have perished he could have perished we could have perished you could have perished they could have perished
Perfeito com V-ing
I could have been perishing you could have been perishing he could have been perishing we could have been perishing you could have been perishing they could have been perishing
Negação
Forma simple
I couldn't perish you couldn't perish he couldn't perish we couldn't perish you couldn't perish they couldn't perish
Forma com V-ing
I couldn't be perishing you couldn't be perishing he couldn't be perishing we couldn't be perishing you couldn't be perishing they couldn't be perishing
Perfeito
I couldn't have perished you couldn't have perished he couldn't have perished we couldn't have perished you couldn't have perished they couldn't have perished
Perfeito com V-ing
I couldn't have been perishing you couldn't have been perishing he couldn't have been perishing we couldn't have been perishing you couldn't have been perishing they couldn't have been perishing
Forma interrogativa
Forma simple
could I perish? could you perish? could he perish? could we perish? could you perish? could they perish?
Forma com V-ing
could I be perishing? could you be perishing? could he be perishing? could we be perishing? could you be perishing? could they be perishing?
Perfeito
could I have perished? could you have perished? could he have perished? could we have perished? could you have perished? could they have perished?
Perfeito com V-ing
could I have been perishing? could you have been perishing? could he have been perishing? could we have been perishing? could you have been perishing? could they have been perishing?
Forma interro-Negação
Forma simple
couldn't I perish? couldn't you perish? couldn't he perish? couldn't we perish? couldn't you perish? couldn't they perish?
Forma com V-ing
couldn't I be perishing? couldn't you be perishing? couldn't he be perishing? couldn't we be perishing? couldn't you be perishing? couldn't they be perishing?
Perfeito
couldn't I have perished? couldn't you have perished? couldn't he have perished? couldn't we have perished? couldn't you have perished? couldn't they have perished?
Perfeito com V-ing
couldn't I have been perishing? couldn't you have been perishing? couldn't he have been perishing? couldn't we have been perishing? couldn't you have been perishing? couldn't they have been perishing?