I can presume you can presume he can presume we can presume you can presume they can presume
V-ing form
I can be presuming you can be presuming he can be presuming we can be presuming you can be presuming they can be presuming
Perfect
I can have presumed you can have presumed he can have presumed we can have presumed you can have presumed they can have presumed
V-ing perfect
I can have been presuming you can have been presuming he can have been presuming we can have been presuming you can have been presuming they can have been presuming
Negation
Simple form
I can't presume you can't presume he can't presume we can't presume you can't presume they can't presume
V-ing form
I can't be presuming you can't be presuming he can't be presuming we can't be presuming you can't be presuming they can't be presuming
Perfect
I can't have presumed you can't have presumed he can't have presumed we can't have presumed you can't have presumed they can't have presumed
V-ing perfect
I can't have been presuming you can't have been presuming he can't have been presuming we can't have been presuming you can't have been presuming they can't have been presuming
Interrogative form
Simple form
can I presume? can you presume? can he presume? can we presume? can you presume? can they presume?
V-ing form
can I be presuming? can you be presuming? can he be presuming? can we be presuming? can you be presuming? can they be presuming?
Perfect
can I have presumed? can you have presumed? can he have presumed? can we have presumed? can you have presumed? can they have presumed?
V-ing perfect
can I have been presuming? can you have been presuming? can he have been presuming? can we have been presuming? can you have been presuming? can they have been presuming?
Interro-negative form
Simple form
can't I presume? can't you presume? can't he presume? can't we presume? can't you presume? can't they presume?
V-ing form
can't I be presuming? can't you be presuming? can't he be presuming? can't we be presuming? can't you be presuming? can't they be presuming?
Perfect
can't I have presumed? can't you have presumed? can't he have presumed? can't we have presumed? can't you have presumed? can't they have presumed?
V-ing perfect
can't I have been presuming? can't you have been presuming? can't he have been presuming? can't we have been presuming? can't you have been presuming? can't they have been presuming?