can fax
Regular verb: fax - faxed- faxed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fax
you can fax
she can fax
we can fax
you can fax
they can fax 	I can be faxing
you can be faxing
she can be faxing
we can be faxing
you can be faxing
they can be faxing	I can have faxed
you can have faxed
she can have faxed
we can have faxed
you can have faxed
they can have faxed	I can have been faxing
you can have been faxing
she can have been faxing
we can have been faxing
you can have been faxing
they can have been faxing	

Negation 	
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I can't fax
you can't fax
she can't fax
we can't fax
you can't fax
they can't fax 	I can't be faxing
you can't be faxing
she can't be faxing
we can't be faxing
you can't be faxing
they can't be faxing	I can't have faxed
you can't have faxed
she can't have faxed
we can't have faxed
you can't have faxed
they can't have faxed	I can't have been faxing
you can't have been faxing
she can't have been faxing
we can't have been faxing
you can't have been faxing
they can't have been faxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fax?
can you fax?
can she fax?
can we fax?
can you fax?
can they fax? 	can I be faxing?
can you be faxing?
can she be faxing?
can we be faxing?
can you be faxing?
can they be faxing? 	can I have faxed?
can you have faxed?
can she have faxed?
can we have faxed?
can you have faxed?
can they have faxed? 	can I have been faxing?
can you have been faxing?
can she have been faxing?
can we have been faxing?
can you have been faxing?
can they have been faxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I fax?
can't you fax?
can't she fax?
can't we fax?
can't you fax?
can't they fax? 	can't I be faxing?
can't you be faxing?
can't she be faxing?
can't we be faxing?
can't you be faxing?
can't they be faxing? 	can't I have faxed?
can't you have faxed?
can't she have faxed?
can't we have faxed?
can't you have faxed?
can't they have faxed? 	can't I have been faxing?
can't you have been faxing?
can't she have been faxing?
can't we have been faxing?
can't you have been faxing?
can't they have been faxing?