I could fatigue you could fatigue he could fatigue we could fatigue you could fatigue they could fatigue
Forma com V-ing
I could be fatiguing you could be fatiguing he could be fatiguing we could be fatiguing you could be fatiguing they could be fatiguing
Perfeito
I could have fatigued you could have fatigued he could have fatigued we could have fatigued you could have fatigued they could have fatigued
Perfeito com V-ing
I could have been fatiguing you could have been fatiguing he could have been fatiguing we could have been fatiguing you could have been fatiguing they could have been fatiguing
Negação
Forma simple
I could not fatigue you could not fatigue he could not fatigue we could not fatigue you could not fatigue they could not fatigue
Forma com V-ing
I could not be fatiguing you could not be fatiguing he could not be fatiguing we could not be fatiguing you could not be fatiguing they could not be fatiguing
Perfeito
I could not have fatigued you could not have fatigued he could not have fatigued we could not have fatigued you could not have fatigued they could not have fatigued
Perfeito com V-ing
I could not have been fatiguing you could not have been fatiguing he could not have been fatiguing we could not have been fatiguing you could not have been fatiguing they could not have been fatiguing
Forma interrogativa
Forma simple
could I fatigue? could you fatigue? could he fatigue? could we fatigue? could you fatigue? could they fatigue?
Forma com V-ing
could I be fatiguing? could you be fatiguing? could he be fatiguing? could we be fatiguing? could you be fatiguing? could they be fatiguing?
Perfeito
could I have fatigued? could you have fatigued? could he have fatigued? could we have fatigued? could you have fatigued? could they have fatigued?
Perfeito com V-ing
could I have been fatiguing? could you have been fatiguing? could he have been fatiguing? could we have been fatiguing? could you have been fatiguing? could they have been fatiguing?
Forma interro-Negação
Forma simple
could I not fatigue? could you not fatigue? could he not fatigue? could we not fatigue? could you not fatigue? could they not fatigue?
Forma com V-ing
could I not be fatiguing? could you not be fatiguing? could he not be fatiguing? could we not be fatiguing? could you not be fatiguing? could they not be fatiguing?
Perfeito
could I not have fatigued? could you not have fatigued? could he not have fatigued? could we not have fatigued? could you not have fatigued? could they not have fatigued?
Perfeito com V-ing
could I not have been fatiguing? could you not have been fatiguing? could he not have been fatiguing? could we not have been fatiguing? could you not have been fatiguing? could they not have been fatiguing?