I can hallucinate you can hallucinate he can hallucinate we can hallucinate you can hallucinate they can hallucinate
V-ing form
I can be hallucinating you can be hallucinating he can be hallucinating we can be hallucinating you can be hallucinating they can be hallucinating
Perfect
I can have hallucinated you can have hallucinated he can have hallucinated we can have hallucinated you can have hallucinated they can have hallucinated
V-ing perfect
I can have been hallucinating you can have been hallucinating he can have been hallucinating we can have been hallucinating you can have been hallucinating they can have been hallucinating
Negation
Simple form
I can't hallucinate you can't hallucinate he can't hallucinate we can't hallucinate you can't hallucinate they can't hallucinate
V-ing form
I can't be hallucinating you can't be hallucinating he can't be hallucinating we can't be hallucinating you can't be hallucinating they can't be hallucinating
Perfect
I can't have hallucinated you can't have hallucinated he can't have hallucinated we can't have hallucinated you can't have hallucinated they can't have hallucinated
V-ing perfect
I can't have been hallucinating you can't have been hallucinating he can't have been hallucinating we can't have been hallucinating you can't have been hallucinating they can't have been hallucinating
Interrogative form
Simple form
can I hallucinate? can you hallucinate? can he hallucinate? can we hallucinate? can you hallucinate? can they hallucinate?
V-ing form
can I be hallucinating? can you be hallucinating? can he be hallucinating? can we be hallucinating? can you be hallucinating? can they be hallucinating?
Perfect
can I have hallucinated? can you have hallucinated? can he have hallucinated? can we have hallucinated? can you have hallucinated? can they have hallucinated?
V-ing perfect
can I have been hallucinating? can you have been hallucinating? can he have been hallucinating? can we have been hallucinating? can you have been hallucinating? can they have been hallucinating?
Interro-negative form
Simple form
can't I hallucinate? can't you hallucinate? can't he hallucinate? can't we hallucinate? can't you hallucinate? can't they hallucinate?
V-ing form
can't I be hallucinating? can't you be hallucinating? can't he be hallucinating? can't we be hallucinating? can't you be hallucinating? can't they be hallucinating?
Perfect
can't I have hallucinated? can't you have hallucinated? can't he have hallucinated? can't we have hallucinated? can't you have hallucinated? can't they have hallucinated?
V-ing perfect
can't I have been hallucinating? can't you have been hallucinating? can't he have been hallucinating? can't we have been hallucinating? can't you have been hallucinating? can't they have been hallucinating?