can fathom
Regular verb: fathom - fathomed- fathomed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fathom
you can fathom
he can fathom
we can fathom
you can fathom
they can fathom 	I can be fathoming
you can be fathoming
he can be fathoming
we can be fathoming
you can be fathoming
they can be fathoming	I can have fathomed
you can have fathomed
he 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
he 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 can't fathom
you can't fathom
he can't fathom
we can't fathom
you can't fathom
they can't fathom 	I can't be fathoming
you can't be fathoming
he can't be fathoming
we can't be fathoming
you can't be fathoming
they can't be fathoming	I can't have fathomed
you can't have fathomed
he can't have fathomed
we can't have fathomed
you can't have fathomed
they can't have fathomed	I can't have been fathoming
you can't have been fathoming
he can't have been fathoming
we can't have been fathoming
you can't have been fathoming
they can't have been fathoming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fathom?
can you fathom?
can he fathom?
can we fathom?
can you fathom?
can they fathom? 	can I be fathoming?
can you be fathoming?
can he be fathoming?
can we be fathoming?
can you be fathoming?
can they be fathoming? 	can I have fathomed?
can you have fathomed?
can he 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 he 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't I fathom?
can't you fathom?
can't he fathom?
can't we fathom?
can't you fathom?
can't they fathom? 	can't I be fathoming?
can't you be fathoming?
can't he be fathoming?
can't we be fathoming?
can't you be fathoming?
can't they be fathoming? 	can't I have fathomed?
can't you have fathomed?
can't he have fathomed?
can't we have fathomed?
can't you have fathomed?
can't they have fathomed? 	can't I have been fathoming?
can't you have been fathoming?
can't he have been fathoming?
can't we have been fathoming?
can't you have been fathoming?
can't they have been fathoming?