I can overdo you can overdo she can overdo we can overdo you can overdo they can overdo
V-ing form
I can be overdoing you can be overdoing she can be overdoing we can be overdoing you can be overdoing they can be overdoing
Perfect
I can have overdone you can have overdone she can have overdone we can have overdone you can have overdone they can have overdone
V-ing perfect
I can have been overdoing you can have been overdoing she can have been overdoing we can have been overdoing you can have been overdoing they can have been overdoing
Negation
Simple form
I can't overdo you can't overdo she can't overdo we can't overdo you can't overdo they can't overdo
V-ing form
I can't be overdoing you can't be overdoing she can't be overdoing we can't be overdoing you can't be overdoing they can't be overdoing
Perfect
I can't have overdone you can't have overdone she can't have overdone we can't have overdone you can't have overdone they can't have overdone
V-ing perfect
I can't have been overdoing you can't have been overdoing she can't have been overdoing we can't have been overdoing you can't have been overdoing they can't have been overdoing
Interrogative form
Simple form
can I overdo? can you overdo? can she overdo? can we overdo? can you overdo? can they overdo?
V-ing form
can I be overdoing? can you be overdoing? can she be overdoing? can we be overdoing? can you be overdoing? can they be overdoing?
Perfect
can I have overdone? can you have overdone? can she have overdone? can we have overdone? can you have overdone? can they have overdone?
V-ing perfect
can I have been overdoing? can you have been overdoing? can she have been overdoing? can we have been overdoing? can you have been overdoing? can they have been overdoing?
Interro-negative form
Simple form
can't I overdo? can't you overdo? can't she overdo? can't we overdo? can't you overdo? can't they overdo?
V-ing form
can't I be overdoing? can't you be overdoing? can't she be overdoing? can't we be overdoing? can't you be overdoing? can't they be overdoing?
Perfect
can't I have overdone? can't you have overdone? can't she have overdone? can't we have overdone? can't you have overdone? can't they have overdone?
V-ing perfect
can't I have been overdoing? can't you have been overdoing? can't she have been overdoing? can't we have been overdoing? can't you have been overdoing? can't they have been overdoing?