Conjugação do verbo inglês
COULD CIRCUMSTANTIATE

Verbo regular: circumstantiate - circumstantiated - circumstantiated

Afirmação

Forma simple	Forma com V-ing
I could circumstantiate you could circumstantiate he could circumstantiate we could circumstantiate you could circumstantiate they could circumstantiate	I could be circumstantiating you could be circumstantiating he could be circumstantiating we could be circumstantiating you could be circumstantiating they could be circumstantiating
Perfeito	Perfeito com V-ing
I could have circumstantiated you could have circumstantiated he could have circumstantiated we could have circumstantiated you could have circumstantiated they could have circumstantiated	I could have been circumstantiating you could have been circumstantiating he could have been circumstantiating we could have been circumstantiating you could have been circumstantiating they could have been circumstantiating

Negação

Forma simple	Forma com V-ing
I couldn't circumstantiate you couldn't circumstantiate he couldn't circumstantiate we couldn't circumstantiate you couldn't circumstantiate they couldn't circumstantiate	I couldn't be circumstantiating you couldn't be circumstantiating he couldn't be circumstantiating we couldn't be circumstantiating you couldn't be circumstantiating they couldn't be circumstantiating
Perfeito	Perfeito com V-ing
I couldn't have circumstantiated you couldn't have circumstantiated he couldn't have circumstantiated we couldn't have circumstantiated you couldn't have circumstantiated they couldn't have circumstantiated	I couldn't have been circumstantiating you couldn't have been circumstantiating he couldn't have been circumstantiating we couldn't have been circumstantiating you couldn't have been circumstantiating they couldn't have been circumstantiating

Forma interrogativa

Forma simple	Forma com V-ing
could I circumstantiate? could you circumstantiate? could he circumstantiate? could we circumstantiate? could you circumstantiate? could they circumstantiate?	could I be circumstantiating? could you be circumstantiating? could he be circumstantiating? could we be circumstantiating? could you be circumstantiating? could they be circumstantiating?
Perfeito	Perfeito com V-ing
could I have circumstantiated? could you have circumstantiated? could he have circumstantiated? could we have circumstantiated? could you have circumstantiated? could they have circumstantiated?	could I have been circumstantiating? could you have been circumstantiating? could he have been circumstantiating? could we have been circumstantiating? could you have been circumstantiating? could they have been circumstantiating?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I circumstantiate? couldn't you circumstantiate? couldn't he circumstantiate? couldn't we circumstantiate? couldn't you circumstantiate? couldn't they circumstantiate?	couldn't I be circumstantiating? couldn't you be circumstantiating? couldn't he be circumstantiating? couldn't we be circumstantiating? couldn't you be circumstantiating? couldn't they be circumstantiating?
Perfeito	Perfeito com V-ing
couldn't I have circumstantiated? couldn't you have circumstantiated? couldn't he have circumstantiated? couldn't we have circumstantiated? couldn't you have circumstantiated? couldn't they have circumstantiated?	couldn't I have been circumstantiating? couldn't you have been circumstantiating? couldn't he have been circumstantiating? couldn't we have been circumstantiating? couldn't you have been circumstantiating? couldn't they have been circumstantiating?