Conjugação do verbo inglês
COULD DIPHTHONGISE

Verbo regular: diphthongise - diphthongised - diphthongised

Afirmação

Forma simple	Forma com V-ing
I could diphthongise you could diphthongise he could diphthongise we could diphthongise you could diphthongise they could diphthongise	I could be diphthongising you could be diphthongising he could be diphthongising we could be diphthongising you could be diphthongising they could be diphthongising
Perfeito	Perfeito com V-ing
I could have diphthongised you could have diphthongised he could have diphthongised we could have diphthongised you could have diphthongised they could have diphthongised	I could have been diphthongising you could have been diphthongising he could have been diphthongising we could have been diphthongising you could have been diphthongising they could have been diphthongising

Negação

Forma simple	Forma com V-ing
I couldn't diphthongise you couldn't diphthongise he couldn't diphthongise we couldn't diphthongise you couldn't diphthongise they couldn't diphthongise	I couldn't be diphthongising you couldn't be diphthongising he couldn't be diphthongising we couldn't be diphthongising you couldn't be diphthongising they couldn't be diphthongising
Perfeito	Perfeito com V-ing
I couldn't have diphthongised you couldn't have diphthongised he couldn't have diphthongised we couldn't have diphthongised you couldn't have diphthongised they couldn't have diphthongised	I couldn't have been diphthongising you couldn't have been diphthongising he couldn't have been diphthongising we couldn't have been diphthongising you couldn't have been diphthongising they couldn't have been diphthongising

Forma interrogativa

Forma simple	Forma com V-ing
could I diphthongise? could you diphthongise? could he diphthongise? could we diphthongise? could you diphthongise? could they diphthongise?	could I be diphthongising? could you be diphthongising? could he be diphthongising? could we be diphthongising? could you be diphthongising? could they be diphthongising?
Perfeito	Perfeito com V-ing
could I have diphthongised? could you have diphthongised? could he have diphthongised? could we have diphthongised? could you have diphthongised? could they have diphthongised?	could I have been diphthongising? could you have been diphthongising? could he have been diphthongising? could we have been diphthongising? could you have been diphthongising? could they have been diphthongising?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I diphthongise? couldn't you diphthongise? couldn't he diphthongise? couldn't we diphthongise? couldn't you diphthongise? couldn't they diphthongise?	couldn't I be diphthongising? couldn't you be diphthongising? couldn't he be diphthongising? couldn't we be diphthongising? couldn't you be diphthongising? couldn't they be diphthongising?
Perfeito	Perfeito com V-ing
couldn't I have diphthongised? couldn't you have diphthongised? couldn't he have diphthongised? couldn't we have diphthongised? couldn't you have diphthongised? couldn't they have diphthongised?	couldn't I have been diphthongising? couldn't you have been diphthongising? couldn't he have been diphthongising? couldn't we have been diphthongising? couldn't you have been diphthongising? couldn't they have been diphthongising?