can tax
Regular verb: tax - taxed- taxed

Affirmation 	
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I can tax
you can tax
he can tax
we can tax
you can tax
they can tax 	I can be taxing
you can be taxing
he can be taxing
we can be taxing
you can be taxing
they can be taxing	I can have taxed
you can have taxed
he can have taxed
we can have taxed
you can have taxed
they can have taxed	I can have been taxing
you can have been taxing
he can have been taxing
we can have been taxing
you can have been taxing
they can have been taxing	

Negation 	
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I can't tax
you can't tax
he can't tax
we can't tax
you can't tax
they can't tax 	I can't be taxing
you can't be taxing
he can't be taxing
we can't be taxing
you can't be taxing
they can't be taxing	I can't have taxed
you can't have taxed
he can't have taxed
we can't have taxed
you can't have taxed
they can't have taxed	I can't have been taxing
you can't have been taxing
he can't have been taxing
we can't have been taxing
you can't have been taxing
they can't have been taxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I tax?
can you tax?
can he tax?
can we tax?
can you tax?
can they tax? 	can I be taxing?
can you be taxing?
can he be taxing?
can we be taxing?
can you be taxing?
can they be taxing? 	can I have taxed?
can you have taxed?
can he have taxed?
can we have taxed?
can you have taxed?
can they have taxed? 	can I have been taxing?
can you have been taxing?
can he have been taxing?
can we have been taxing?
can you have been taxing?
can they have been taxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I tax?
can't you tax?
can't he tax?
can't we tax?
can't you tax?
can't they tax? 	can't I be taxing?
can't you be taxing?
can't he be taxing?
can't we be taxing?
can't you be taxing?
can't they be taxing? 	can't I have taxed?
can't you have taxed?
can't he have taxed?
can't we have taxed?
can't you have taxed?
can't they have taxed? 	can't I have been taxing?
can't you have been taxing?
can't he have been taxing?
can't we have been taxing?
can't you have been taxing?
can't they have been taxing?