I can boss you can boss he can boss we can boss you can boss they can boss
V-ing form
I can be bossing you can be bossing he can be bossing we can be bossing you can be bossing they can be bossing
Perfect
I can have bossed you can have bossed he can have bossed we can have bossed you can have bossed they can have bossed
V-ing perfect
I can have been bossing you can have been bossing he can have been bossing we can have been bossing you can have been bossing they can have been bossing
Negation
Simple form
I can't boss you can't boss he can't boss we can't boss you can't boss they can't boss
V-ing form
I can't be bossing you can't be bossing he can't be bossing we can't be bossing you can't be bossing they can't be bossing
Perfect
I can't have bossed you can't have bossed he can't have bossed we can't have bossed you can't have bossed they can't have bossed
V-ing perfect
I can't have been bossing you can't have been bossing he can't have been bossing we can't have been bossing you can't have been bossing they can't have been bossing
Interrogative form
Simple form
can I boss? can you boss? can he boss? can we boss? can you boss? can they boss?
V-ing form
can I be bossing? can you be bossing? can he be bossing? can we be bossing? can you be bossing? can they be bossing?
Perfect
can I have bossed? can you have bossed? can he have bossed? can we have bossed? can you have bossed? can they have bossed?
V-ing perfect
can I have been bossing? can you have been bossing? can he have been bossing? can we have been bossing? can you have been bossing? can they have been bossing?
Interro-negative form
Simple form
can't I boss? can't you boss? can't he boss? can't we boss? can't you boss? can't they boss?
V-ing form
can't I be bossing? can't you be bossing? can't he be bossing? can't we be bossing? can't you be bossing? can't they be bossing?
Perfect
can't I have bossed? can't you have bossed? can't he have bossed? can't we have bossed? can't you have bossed? can't they have bossed?
V-ing perfect
can't I have been bossing? can't you have been bossing? can't he have been bossing? can't we have been bossing? can't you have been bossing? can't they have been bossing?