I could contend you could contend she could contend we could contend you could contend they could contend
Forma com V-ing
I could be contending you could be contending she could be contending we could be contending you could be contending they could be contending
Perfeito
I could have contended you could have contended she could have contended we could have contended you could have contended they could have contended
Perfeito com V-ing
I could have been contending you could have been contending she could have been contending we could have been contending you could have been contending they could have been contending
Negação
Forma simple
I couldn't contend you couldn't contend she couldn't contend we couldn't contend you couldn't contend they couldn't contend
Forma com V-ing
I couldn't be contending you couldn't be contending she couldn't be contending we couldn't be contending you couldn't be contending they couldn't be contending
Perfeito
I couldn't have contended you couldn't have contended she couldn't have contended we couldn't have contended you couldn't have contended they couldn't have contended
Perfeito com V-ing
I couldn't have been contending you couldn't have been contending she couldn't have been contending we couldn't have been contending you couldn't have been contending they couldn't have been contending
Forma interrogativa
Forma simple
could I contend? could you contend? could she contend? could we contend? could you contend? could they contend?
Forma com V-ing
could I be contending? could you be contending? could she be contending? could we be contending? could you be contending? could they be contending?
Perfeito
could I have contended? could you have contended? could she have contended? could we have contended? could you have contended? could they have contended?
Perfeito com V-ing
could I have been contending? could you have been contending? could she have been contending? could we have been contending? could you have been contending? could they have been contending?
Forma interro-Negação
Forma simple
couldn't I contend? couldn't you contend? couldn't she contend? couldn't we contend? couldn't you contend? couldn't they contend?
Forma com V-ing
couldn't I be contending? couldn't you be contending? couldn't she be contending? couldn't we be contending? couldn't you be contending? couldn't they be contending?
Perfeito
couldn't I have contended? couldn't you have contended? couldn't she have contended? couldn't we have contended? couldn't you have contended? couldn't they have contended?
Perfeito com V-ing
couldn't I have been contending? couldn't you have been contending? couldn't she have been contending? couldn't we have been contending? couldn't you have been contending? couldn't they have been contending?