I can steam you can steam he can steam we can steam you can steam they can steam
V-ing form
I can be steaming you can be steaming he can be steaming we can be steaming you can be steaming they can be steaming
Perfect
I can have steamed you can have steamed he can have steamed we can have steamed you can have steamed they can have steamed
V-ing perfect
I can have been steaming you can have been steaming he can have been steaming we can have been steaming you can have been steaming they can have been steaming
Negation
Simple form
I cannot steam you cannot steam he cannot steam we cannot steam you cannot steam they cannot steam
V-ing form
I cannot be steaming you cannot be steaming he cannot be steaming we cannot be steaming you cannot be steaming they cannot be steaming
Perfect
I cannot have steamed you cannot have steamed he cannot have steamed we cannot have steamed you cannot have steamed they cannot have steamed
V-ing perfect
I cannot have been steaming you cannot have been steaming he cannot have been steaming we cannot have been steaming you cannot have been steaming they cannot have been steaming
Interrogative form
Simple form
can I steam? can you steam? can he steam? can we steam? can you steam? can they steam?
V-ing form
can I be steaming? can you be steaming? can he be steaming? can we be steaming? can you be steaming? can they be steaming?
Perfect
can I have steamed? can you have steamed? can he have steamed? can we have steamed? can you have steamed? can they have steamed?
V-ing perfect
can I have been steaming? can you have been steaming? can he have been steaming? can we have been steaming? can you have been steaming? can they have been steaming?
Interro-negative form
Simple form
can I not steam? can you not steam? can he not steam? can we not steam? can you not steam? can they not steam?
V-ing form
can I not be steaming? can you not be steaming? can he not be steaming? can we not be steaming? can you not be steaming? can they not be steaming?
Perfect
can I not have steamed? can you not have steamed? can he not have steamed? can we not have steamed? can you not have steamed? can they not have steamed?
V-ing perfect
can I not have been steaming? can you not have been steaming? can he not have been steaming? can we not have been steaming? can you not have been steaming? can they not have been steaming?