can fathom
Regular verb: fathom - fathomed- fathomed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fathom
you can fathom
she can fathom
we can fathom
you can fathom
they can fathom 	I can be fathoming
you can be fathoming
she can be fathoming
we can be fathoming
you can be fathoming
they can be fathoming	I can have fathomed
you can have fathomed
she can have fathomed
we can have fathomed
you can have fathomed
they can have fathomed	I can have been fathoming
you can have been fathoming
she can have been fathoming
we can have been fathoming
you can have been fathoming
they can have been fathoming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot fathom
you cannot fathom
she cannot fathom
we cannot fathom
you cannot fathom
they cannot fathom 	I cannot be fathoming
you cannot be fathoming
she cannot be fathoming
we cannot be fathoming
you cannot be fathoming
they cannot be fathoming	I cannot have fathomed
you cannot have fathomed
she cannot have fathomed
we cannot have fathomed
you cannot have fathomed
they cannot have fathomed	I cannot have been fathoming
you cannot have been fathoming
she cannot have been fathoming
we cannot have been fathoming
you cannot have been fathoming
they cannot have been fathoming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fathom?
can you fathom?
can she fathom?
can we fathom?
can you fathom?
can they fathom? 	can I be fathoming?
can you be fathoming?
can she be fathoming?
can we be fathoming?
can you be fathoming?
can they be fathoming? 	can I have fathomed?
can you have fathomed?
can she have fathomed?
can we have fathomed?
can you have fathomed?
can they have fathomed? 	can I have been fathoming?
can you have been fathoming?
can she have been fathoming?
can we have been fathoming?
can you have been fathoming?
can they have been fathoming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not fathom?
can you not fathom?
can she not fathom?
can we not fathom?
can you not fathom?
can they not fathom? 	can I not be fathoming?
can you not be fathoming?
can she not be fathoming?
can we not be fathoming?
can you not be fathoming?
can they not be fathoming? 	can I not have fathomed?
can you not have fathomed?
can she not have fathomed?
can we not have fathomed?
can you not have fathomed?
can they not have fathomed? 	can I not have been fathoming?
can you not have been fathoming?
can she not have been fathoming?
can we not have been fathoming?
can you not have been fathoming?
can they not have been fathoming?