I could burnish you could burnish he could burnish we could burnish you could burnish they could burnish
Forma con V-ing
I could be burnishing you could be burnishing he could be burnishing we could be burnishing you could be burnishing they could be burnishing
Perfecto
I could have burnished you could have burnished he could have burnished we could have burnished you could have burnished they could have burnished
Perfecto con V-ing
I could have been burnishing you could have been burnishing he could have been burnishing we could have been burnishing you could have been burnishing they could have been burnishing
Negación
Forma simple
I couldn't burnish you couldn't burnish he couldn't burnish we couldn't burnish you couldn't burnish they couldn't burnish
Forma con V-ing
I couldn't be burnishing you couldn't be burnishing he couldn't be burnishing we couldn't be burnishing you couldn't be burnishing they couldn't be burnishing
Perfecto
I couldn't have burnished you couldn't have burnished he couldn't have burnished we couldn't have burnished you couldn't have burnished they couldn't have burnished
Perfecto con V-ing
I couldn't have been burnishing you couldn't have been burnishing he couldn't have been burnishing we couldn't have been burnishing you couldn't have been burnishing they couldn't have been burnishing
Forma interrogativa
Forma simple
could I burnish? could you burnish? could he burnish? could we burnish? could you burnish? could they burnish?
Forma con V-ing
could I be burnishing? could you be burnishing? could he be burnishing? could we be burnishing? could you be burnishing? could they be burnishing?
Perfecto
could I have burnished? could you have burnished? could he have burnished? could we have burnished? could you have burnished? could they have burnished?
Perfecto con V-ing
could I have been burnishing? could you have been burnishing? could he have been burnishing? could we have been burnishing? could you have been burnishing? could they have been burnishing?
Forma interro-negativa
Forma simple
couldn't I burnish? couldn't you burnish? couldn't he burnish? couldn't we burnish? couldn't you burnish? couldn't they burnish?
Forma con V-ing
couldn't I be burnishing? couldn't you be burnishing? couldn't he be burnishing? couldn't we be burnishing? couldn't you be burnishing? couldn't they be burnishing?
Perfecto
couldn't I have burnished? couldn't you have burnished? couldn't he have burnished? couldn't we have burnished? couldn't you have burnished? couldn't they have burnished?
Perfecto con V-ing
couldn't I have been burnishing? couldn't you have been burnishing? couldn't he have been burnishing? couldn't we have been burnishing? couldn't you have been burnishing? couldn't they have been burnishing?