could risk
Verbo regular: risk - risked- risked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could risk
you could risk
he could risk
we could risk
you could risk
they could risk 	I could be risking
you could be risking
he could be risking
we could be risking
you could be risking
they could be risking	I could have risked
you could have risked
he could have risked
we could have risked
you could have risked
they could have risked	I could have been risking
you could have been risking
he could have been risking
we could have been risking
you could have been risking
they could have been risking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't risk
you couldn't risk
he couldn't risk
we couldn't risk
you couldn't risk
they couldn't risk 	I couldn't be risking
you couldn't be risking
he couldn't be risking
we couldn't be risking
you couldn't be risking
they couldn't be risking	I couldn't have risked
you couldn't have risked
he couldn't have risked
we couldn't have risked
you couldn't have risked
they couldn't have risked	I couldn't have been risking
you couldn't have been risking
he couldn't have been risking
we couldn't have been risking
you couldn't have been risking
they couldn't have been risking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I risk?
could you risk?
could he risk?
could we risk?
could you risk?
could they risk? 	could I be risking?
could you be risking?
could he be risking?
could we be risking?
could you be risking?
could they be risking? 	could I have risked?
could you have risked?
could he have risked?
could we have risked?
could you have risked?
could they have risked? 	could I have been risking?
could you have been risking?
could he have been risking?
could we have been risking?
could you have been risking?
could they have been risking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I risk?
couldn't you risk?
couldn't he risk?
couldn't we risk?
couldn't you risk?
couldn't they risk? 	couldn't I be risking?
couldn't you be risking?
couldn't he be risking?
couldn't we be risking?
couldn't you be risking?
couldn't they be risking? 	couldn't I have risked?
couldn't you have risked?
couldn't he have risked?
couldn't we have risked?
couldn't you have risked?
couldn't they have risked? 	couldn't I have been risking?
couldn't you have been risking?
couldn't he have been risking?
couldn't we have been risking?
couldn't you have been risking?
couldn't they have been risking?