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