English verb conjugation
CAN PRESUPPOSE

Regular verb: presuppose - presupposed - presupposed

Affirmation

Simple form	V-ing form
I can presuppose you can presuppose he can presuppose we can presuppose you can presuppose they can presuppose	I can be presupposing you can be presupposing he can be presupposing we can be presupposing you can be presupposing they can be presupposing
Perfect	V-ing perfect
I can have presupposed you can have presupposed he can have presupposed we can have presupposed you can have presupposed they can have presupposed	I can have been presupposing you can have been presupposing he can have been presupposing we can have been presupposing you can have been presupposing they can have been presupposing

Negation

Simple form	V-ing form
I can't presuppose you can't presuppose he can't presuppose we can't presuppose you can't presuppose they can't presuppose	I can't be presupposing you can't be presupposing he can't be presupposing we can't be presupposing you can't be presupposing they can't be presupposing
Perfect	V-ing perfect
I can't have presupposed you can't have presupposed he can't have presupposed we can't have presupposed you can't have presupposed they can't have presupposed	I can't have been presupposing you can't have been presupposing he can't have been presupposing we can't have been presupposing you can't have been presupposing they can't have been presupposing

Interrogative form

Simple form	V-ing form
can I presuppose? can you presuppose? can he presuppose? can we presuppose? can you presuppose? can they presuppose?	can I be presupposing? can you be presupposing? can he be presupposing? can we be presupposing? can you be presupposing? can they be presupposing?
Perfect	V-ing perfect
can I have presupposed? can you have presupposed? can he have presupposed? can we have presupposed? can you have presupposed? can they have presupposed?	can I have been presupposing? can you have been presupposing? can he have been presupposing? can we have been presupposing? can you have been presupposing? can they have been presupposing?

Interro-negative form

Simple form	V-ing form
can't I presuppose? can't you presuppose? can't he presuppose? can't we presuppose? can't you presuppose? can't they presuppose?	can't I be presupposing? can't you be presupposing? can't he be presupposing? can't we be presupposing? can't you be presupposing? can't they be presupposing?
Perfect	V-ing perfect
can't I have presupposed? can't you have presupposed? can't he have presupposed? can't we have presupposed? can't you have presupposed? can't they have presupposed?	can't I have been presupposing? can't you have been presupposing? can't he have been presupposing? can't we have been presupposing? can't you have been presupposing? can't they have been presupposing?