I can apologize you can apologize he can apologize we can apologize you can apologize they can apologize
V-ing form
I can be apologizing you can be apologizing he can be apologizing we can be apologizing you can be apologizing they can be apologizing
Perfect
I can have apologized you can have apologized he can have apologized we can have apologized you can have apologized they can have apologized
V-ing perfect
I can have been apologizing you can have been apologizing he can have been apologizing we can have been apologizing you can have been apologizing they can have been apologizing
Negation
Simple form
I can't apologize you can't apologize he can't apologize we can't apologize you can't apologize they can't apologize
V-ing form
I can't be apologizing you can't be apologizing he can't be apologizing we can't be apologizing you can't be apologizing they can't be apologizing
Perfect
I can't have apologized you can't have apologized he can't have apologized we can't have apologized you can't have apologized they can't have apologized
V-ing perfect
I can't have been apologizing you can't have been apologizing he can't have been apologizing we can't have been apologizing you can't have been apologizing they can't have been apologizing
Interrogative form
Simple form
can I apologize? can you apologize? can he apologize? can we apologize? can you apologize? can they apologize?
V-ing form
can I be apologizing? can you be apologizing? can he be apologizing? can we be apologizing? can you be apologizing? can they be apologizing?
Perfect
can I have apologized? can you have apologized? can he have apologized? can we have apologized? can you have apologized? can they have apologized?
V-ing perfect
can I have been apologizing? can you have been apologizing? can he have been apologizing? can we have been apologizing? can you have been apologizing? can they have been apologizing?
Interro-negative form
Simple form
can't I apologize? can't you apologize? can't he apologize? can't we apologize? can't you apologize? can't they apologize?
V-ing form
can't I be apologizing? can't you be apologizing? can't he be apologizing? can't we be apologizing? can't you be apologizing? can't they be apologizing?
Perfect
can't I have apologized? can't you have apologized? can't he have apologized? can't we have apologized? can't you have apologized? can't they have apologized?
V-ing perfect
can't I have been apologizing? can't you have been apologizing? can't he have been apologizing? can't we have been apologizing? can't you have been apologizing? can't they have been apologizing?