English verb conjugation
CAN PRESUME

Regular verb: presume - presumed - presumed

Affirmation

Simple form	V-ing form
I can presume you can presume he can presume we can presume you can presume they can presume	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	V-ing 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	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	V-ing 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	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	V-ing 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	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	V-ing form
can I presume? can you presume? can he presume? can we presume? can you presume? can they presume?	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	V-ing 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?	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	V-ing 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?	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	V-ing 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?	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?