I can iron you can iron he can iron we can iron you can iron they can iron
V-ing form
I can be ironing you can be ironing he can be ironing we can be ironing you can be ironing they can be ironing
Perfect
I can have ironed you can have ironed he can have ironed we can have ironed you can have ironed they can have ironed
V-ing perfect
I can have been ironing you can have been ironing he can have been ironing we can have been ironing you can have been ironing they can have been ironing
Negation
Simple form
I cannot iron you cannot iron he cannot iron we cannot iron you cannot iron they cannot iron
V-ing form
I cannot be ironing you cannot be ironing he cannot be ironing we cannot be ironing you cannot be ironing they cannot be ironing
Perfect
I cannot have ironed you cannot have ironed he cannot have ironed we cannot have ironed you cannot have ironed they cannot have ironed
V-ing perfect
I cannot have been ironing you cannot have been ironing he cannot have been ironing we cannot have been ironing you cannot have been ironing they cannot have been ironing
Interrogative form
Simple form
can I iron? can you iron? can he iron? can we iron? can you iron? can they iron?
V-ing form
can I be ironing? can you be ironing? can he be ironing? can we be ironing? can you be ironing? can they be ironing?
Perfect
can I have ironed? can you have ironed? can he have ironed? can we have ironed? can you have ironed? can they have ironed?
V-ing perfect
can I have been ironing? can you have been ironing? can he have been ironing? can we have been ironing? can you have been ironing? can they have been ironing?
Interro-negative form
Simple form
can I not iron? can you not iron? can he not iron? can we not iron? can you not iron? can they not iron?
V-ing form
can I not be ironing? can you not be ironing? can he not be ironing? can we not be ironing? can you not be ironing? can they not be ironing?
Perfect
can I not have ironed? can you not have ironed? can he not have ironed? can we not have ironed? can you not have ironed? can they not have ironed?
V-ing perfect
can I not have been ironing? can you not have been ironing? can he not have been ironing? can we not have been ironing? can you not have been ironing? can they not have been ironing?