Cuidado, este verbo pode não existir, a conjugação é dada como exemplo.
Afirmação
Forma simple
I could series you could series she could series we could series you could series they could series
Forma com V-ing
I could be seriesing you could be seriesing she could be seriesing we could be seriesing you could be seriesing they could be seriesing
Perfeito
I could have seriesed you could have seriesed she could have seriesed we could have seriesed you could have seriesed they could have seriesed
Perfeito com V-ing
I could have been seriesing you could have been seriesing she could have been seriesing we could have been seriesing you could have been seriesing they could have been seriesing
Negação
Forma simple
I couldn't series you couldn't series she couldn't series we couldn't series you couldn't series they couldn't series
Forma com V-ing
I couldn't be seriesing you couldn't be seriesing she couldn't be seriesing we couldn't be seriesing you couldn't be seriesing they couldn't be seriesing
Perfeito
I couldn't have seriesed you couldn't have seriesed she couldn't have seriesed we couldn't have seriesed you couldn't have seriesed they couldn't have seriesed
Perfeito com V-ing
I couldn't have been seriesing you couldn't have been seriesing she couldn't have been seriesing we couldn't have been seriesing you couldn't have been seriesing they couldn't have been seriesing
Forma interrogativa
Forma simple
could I series? could you series? could she series? could we series? could you series? could they series?
Forma com V-ing
could I be seriesing? could you be seriesing? could she be seriesing? could we be seriesing? could you be seriesing? could they be seriesing?
Perfeito
could I have seriesed? could you have seriesed? could she have seriesed? could we have seriesed? could you have seriesed? could they have seriesed?
Perfeito com V-ing
could I have been seriesing? could you have been seriesing? could she have been seriesing? could we have been seriesing? could you have been seriesing? could they have been seriesing?
Forma interro-Negação
Forma simple
couldn't I series? couldn't you series? couldn't she series? couldn't we series? couldn't you series? couldn't they series?
Forma com V-ing
couldn't I be seriesing? couldn't you be seriesing? couldn't she be seriesing? couldn't we be seriesing? couldn't you be seriesing? couldn't they be seriesing?
Perfeito
couldn't I have seriesed? couldn't you have seriesed? couldn't she have seriesed? couldn't we have seriesed? couldn't you have seriesed? couldn't they have seriesed?
Perfeito com V-ing
couldn't I have been seriesing? couldn't you have been seriesing? couldn't she have been seriesing? couldn't we have been seriesing? couldn't you have been seriesing? couldn't they have been seriesing?