I can defecate you can defecate he can defecate we can defecate you can defecate they can defecate
V-ing form
I can be defecating you can be defecating he can be defecating we can be defecating you can be defecating they can be defecating
Perfect
I can have defecated you can have defecated he can have defecated we can have defecated you can have defecated they can have defecated
V-ing perfect
I can have been defecating you can have been defecating he can have been defecating we can have been defecating you can have been defecating they can have been defecating
Negation
Simple form
I can't defecate you can't defecate he can't defecate we can't defecate you can't defecate they can't defecate
V-ing form
I can't be defecating you can't be defecating he can't be defecating we can't be defecating you can't be defecating they can't be defecating
Perfect
I can't have defecated you can't have defecated he can't have defecated we can't have defecated you can't have defecated they can't have defecated
V-ing perfect
I can't have been defecating you can't have been defecating he can't have been defecating we can't have been defecating you can't have been defecating they can't have been defecating
Interrogative form
Simple form
can I defecate? can you defecate? can he defecate? can we defecate? can you defecate? can they defecate?
V-ing form
can I be defecating? can you be defecating? can he be defecating? can we be defecating? can you be defecating? can they be defecating?
Perfect
can I have defecated? can you have defecated? can he have defecated? can we have defecated? can you have defecated? can they have defecated?
V-ing perfect
can I have been defecating? can you have been defecating? can he have been defecating? can we have been defecating? can you have been defecating? can they have been defecating?
Interro-negative form
Simple form
can't I defecate? can't you defecate? can't he defecate? can't we defecate? can't you defecate? can't they defecate?
V-ing form
can't I be defecating? can't you be defecating? can't he be defecating? can't we be defecating? can't you be defecating? can't they be defecating?
Perfect
can't I have defecated? can't you have defecated? can't he have defecated? can't we have defecated? can't you have defecated? can't they have defecated?
V-ing perfect
can't I have been defecating? can't you have been defecating? can't he have been defecating? can't we have been defecating? can't you have been defecating? can't they have been defecating?