I can piss you can piss he can piss we can piss you can piss they can piss
V-ing form
I can be pissing you can be pissing he can be pissing we can be pissing you can be pissing they can be pissing
Perfect
I can have pissed you can have pissed he can have pissed we can have pissed you can have pissed they can have pissed
V-ing perfect
I can have been pissing you can have been pissing he can have been pissing we can have been pissing you can have been pissing they can have been pissing
Negation
Simple form
I can't piss you can't piss he can't piss we can't piss you can't piss they can't piss
V-ing form
I can't be pissing you can't be pissing he can't be pissing we can't be pissing you can't be pissing they can't be pissing
Perfect
I can't have pissed you can't have pissed he can't have pissed we can't have pissed you can't have pissed they can't have pissed
V-ing perfect
I can't have been pissing you can't have been pissing he can't have been pissing we can't have been pissing you can't have been pissing they can't have been pissing
Interrogative form
Simple form
can I piss? can you piss? can he piss? can we piss? can you piss? can they piss?
V-ing form
can I be pissing? can you be pissing? can he be pissing? can we be pissing? can you be pissing? can they be pissing?
Perfect
can I have pissed? can you have pissed? can he have pissed? can we have pissed? can you have pissed? can they have pissed?
V-ing perfect
can I have been pissing? can you have been pissing? can he have been pissing? can we have been pissing? can you have been pissing? can they have been pissing?
Interro-negative form
Simple form
can't I piss? can't you piss? can't he piss? can't we piss? can't you piss? can't they piss?
V-ing form
can't I be pissing? can't you be pissing? can't he be pissing? can't we be pissing? can't you be pissing? can't they be pissing?
Perfect
can't I have pissed? can't you have pissed? can't he have pissed? can't we have pissed? can't you have pissed? can't they have pissed?
V-ing perfect
can't I have been pissing? can't you have been pissing? can't he have been pissing? can't we have been pissing? can't you have been pissing? can't they have been pissing?