I can negotiate you can negotiate he can negotiate we can negotiate you can negotiate they can negotiate
V-ing form
I can be negotiating you can be negotiating he can be negotiating we can be negotiating you can be negotiating they can be negotiating
Perfect
I can have negotiated you can have negotiated he can have negotiated we can have negotiated you can have negotiated they can have negotiated
V-ing perfect
I can have been negotiating you can have been negotiating he can have been negotiating we can have been negotiating you can have been negotiating they can have been negotiating
Negation
Simple form
I cannot negotiate you cannot negotiate he cannot negotiate we cannot negotiate you cannot negotiate they cannot negotiate
V-ing form
I cannot be negotiating you cannot be negotiating he cannot be negotiating we cannot be negotiating you cannot be negotiating they cannot be negotiating
Perfect
I cannot have negotiated you cannot have negotiated he cannot have negotiated we cannot have negotiated you cannot have negotiated they cannot have negotiated
V-ing perfect
I cannot have been negotiating you cannot have been negotiating he cannot have been negotiating we cannot have been negotiating you cannot have been negotiating they cannot have been negotiating
Interrogative form
Simple form
can I negotiate? can you negotiate? can he negotiate? can we negotiate? can you negotiate? can they negotiate?
V-ing form
can I be negotiating? can you be negotiating? can he be negotiating? can we be negotiating? can you be negotiating? can they be negotiating?
Perfect
can I have negotiated? can you have negotiated? can he have negotiated? can we have negotiated? can you have negotiated? can they have negotiated?
V-ing perfect
can I have been negotiating? can you have been negotiating? can he have been negotiating? can we have been negotiating? can you have been negotiating? can they have been negotiating?
Interro-negative form
Simple form
can I not negotiate? can you not negotiate? can he not negotiate? can we not negotiate? can you not negotiate? can they not negotiate?
V-ing form
can I not be negotiating? can you not be negotiating? can he not be negotiating? can we not be negotiating? can you not be negotiating? can they not be negotiating?
Perfect
can I not have negotiated? can you not have negotiated? can he not have negotiated? can we not have negotiated? can you not have negotiated? can they not have negotiated?
V-ing perfect
can I not have been negotiating? can you not have been negotiating? can he not have been negotiating? can we not have been negotiating? can you not have been negotiating? can they not have been negotiating?