I can shoulder you can shoulder he can shoulder we can shoulder you can shoulder they can shoulder
V-ing form
I can be shouldering you can be shouldering he can be shouldering we can be shouldering you can be shouldering they can be shouldering
Perfect
I can have shouldered you can have shouldered he can have shouldered we can have shouldered you can have shouldered they can have shouldered
V-ing perfect
I can have been shouldering you can have been shouldering he can have been shouldering we can have been shouldering you can have been shouldering they can have been shouldering
Negation
Simple form
I can't shoulder you can't shoulder he can't shoulder we can't shoulder you can't shoulder they can't shoulder
V-ing form
I can't be shouldering you can't be shouldering he can't be shouldering we can't be shouldering you can't be shouldering they can't be shouldering
Perfect
I can't have shouldered you can't have shouldered he can't have shouldered we can't have shouldered you can't have shouldered they can't have shouldered
V-ing perfect
I can't have been shouldering you can't have been shouldering he can't have been shouldering we can't have been shouldering you can't have been shouldering they can't have been shouldering
Interrogative form
Simple form
can I shoulder? can you shoulder? can he shoulder? can we shoulder? can you shoulder? can they shoulder?
V-ing form
can I be shouldering? can you be shouldering? can he be shouldering? can we be shouldering? can you be shouldering? can they be shouldering?
Perfect
can I have shouldered? can you have shouldered? can he have shouldered? can we have shouldered? can you have shouldered? can they have shouldered?
V-ing perfect
can I have been shouldering? can you have been shouldering? can he have been shouldering? can we have been shouldering? can you have been shouldering? can they have been shouldering?
Interro-negative form
Simple form
can't I shoulder? can't you shoulder? can't he shoulder? can't we shoulder? can't you shoulder? can't they shoulder?
V-ing form
can't I be shouldering? can't you be shouldering? can't he be shouldering? can't we be shouldering? can't you be shouldering? can't they be shouldering?
Perfect
can't I have shouldered? can't you have shouldered? can't he have shouldered? can't we have shouldered? can't you have shouldered? can't they have shouldered?
V-ing perfect
can't I have been shouldering? can't you have been shouldering? can't he have been shouldering? can't we have been shouldering? can't you have been shouldering? can't they have been shouldering?