could fathom
Verbo regular: fathom - fathomed- fathomed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could fathom
you could fathom
she could fathom
we could fathom
you could fathom
they could fathom 	I could be fathoming
you could be fathoming
she could be fathoming
we could be fathoming
you could be fathoming
they could be fathoming	I could have fathomed
you could have fathomed
she could have fathomed
we could have fathomed
you could have fathomed
they could have fathomed	I could have been fathoming
you could have been fathoming
she could have been fathoming
we could have been fathoming
you could have been fathoming
they could have been fathoming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not fathom
you could not fathom
she could not fathom
we could not fathom
you could not fathom
they could not fathom 	I could not be fathoming
you could not be fathoming
she could not be fathoming
we could not be fathoming
you could not be fathoming
they could not be fathoming	I could not have fathomed
you could not have fathomed
she could not have fathomed
we could not have fathomed
you could not have fathomed
they could not have fathomed	I could not have been fathoming
you could not have been fathoming
she could not have been fathoming
we could not have been fathoming
you could not have been fathoming
they could not have been fathoming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I fathom?
could you fathom?
could she fathom?
could we fathom?
could you fathom?
could they fathom? 	could I be fathoming?
could you be fathoming?
could she be fathoming?
could we be fathoming?
could you be fathoming?
could they be fathoming? 	could I have fathomed?
could you have fathomed?
could she have fathomed?
could we have fathomed?
could you have fathomed?
could they have fathomed? 	could I have been fathoming?
could you have been fathoming?
could she have been fathoming?
could we have been fathoming?
could you have been fathoming?
could they have been fathoming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not fathom?
could you not fathom?
could she not fathom?
could we not fathom?
could you not fathom?
could they not fathom? 	could I not be fathoming?
could you not be fathoming?
could she not be fathoming?
could we not be fathoming?
could you not be fathoming?
could they not be fathoming? 	could I not have fathomed?
could you not have fathomed?
could she not have fathomed?
could we not have fathomed?
could you not have fathomed?
could they not have fathomed? 	could I not have been fathoming?
could you not have been fathoming?
could she not have been fathoming?
could we not have been fathoming?
could you not have been fathoming?
could they not have been fathoming?