I can assume you can assume she can assume we can assume you can assume they can assume
V-ing form
I can be assuming you can be assuming she can be assuming we can be assuming you can be assuming they can be assuming
Perfect
I can have assumed you can have assumed she can have assumed we can have assumed you can have assumed they can have assumed
V-ing perfect
I can have been assuming you can have been assuming she can have been assuming we can have been assuming you can have been assuming they can have been assuming
Negation
Simple form
I can't assume you can't assume she can't assume we can't assume you can't assume they can't assume
V-ing form
I can't be assuming you can't be assuming she can't be assuming we can't be assuming you can't be assuming they can't be assuming
Perfect
I can't have assumed you can't have assumed she can't have assumed we can't have assumed you can't have assumed they can't have assumed
V-ing perfect
I can't have been assuming you can't have been assuming she can't have been assuming we can't have been assuming you can't have been assuming they can't have been assuming
Interrogative form
Simple form
can I assume? can you assume? can she assume? can we assume? can you assume? can they assume?
V-ing form
can I be assuming? can you be assuming? can she be assuming? can we be assuming? can you be assuming? can they be assuming?
Perfect
can I have assumed? can you have assumed? can she have assumed? can we have assumed? can you have assumed? can they have assumed?
V-ing perfect
can I have been assuming? can you have been assuming? can she have been assuming? can we have been assuming? can you have been assuming? can they have been assuming?
Interro-negative form
Simple form
can't I assume? can't you assume? can't she assume? can't we assume? can't you assume? can't they assume?
V-ing form
can't I be assuming? can't you be assuming? can't she be assuming? can't we be assuming? can't you be assuming? can't they be assuming?
Perfect
can't I have assumed? can't you have assumed? can't she have assumed? can't we have assumed? can't you have assumed? can't they have assumed?
V-ing perfect
can't I have been assuming? can't you have been assuming? can't she have been assuming? can't we have been assuming? can't you have been assuming? can't they have been assuming?