I can conjecture you can conjecture he can conjecture we can conjecture you can conjecture they can conjecture
V-ing form
I can be conjecturing you can be conjecturing he can be conjecturing we can be conjecturing you can be conjecturing they can be conjecturing
Perfect
I can have conjectured you can have conjectured he can have conjectured we can have conjectured you can have conjectured they can have conjectured
V-ing perfect
I can have been conjecturing you can have been conjecturing he can have been conjecturing we can have been conjecturing you can have been conjecturing they can have been conjecturing
Negation
Simple form
I cannot conjecture you cannot conjecture he cannot conjecture we cannot conjecture you cannot conjecture they cannot conjecture
V-ing form
I cannot be conjecturing you cannot be conjecturing he cannot be conjecturing we cannot be conjecturing you cannot be conjecturing they cannot be conjecturing
Perfect
I cannot have conjectured you cannot have conjectured he cannot have conjectured we cannot have conjectured you cannot have conjectured they cannot have conjectured
V-ing perfect
I cannot have been conjecturing you cannot have been conjecturing he cannot have been conjecturing we cannot have been conjecturing you cannot have been conjecturing they cannot have been conjecturing
Interrogative form
Simple form
can I conjecture? can you conjecture? can he conjecture? can we conjecture? can you conjecture? can they conjecture?
V-ing form
can I be conjecturing? can you be conjecturing? can he be conjecturing? can we be conjecturing? can you be conjecturing? can they be conjecturing?
Perfect
can I have conjectured? can you have conjectured? can he have conjectured? can we have conjectured? can you have conjectured? can they have conjectured?
V-ing perfect
can I have been conjecturing? can you have been conjecturing? can he have been conjecturing? can we have been conjecturing? can you have been conjecturing? can they have been conjecturing?
Interro-negative form
Simple form
can I not conjecture? can you not conjecture? can he not conjecture? can we not conjecture? can you not conjecture? can they not conjecture?
V-ing form
can I not be conjecturing? can you not be conjecturing? can he not be conjecturing? can we not be conjecturing? can you not be conjecturing? can they not be conjecturing?
Perfect
can I not have conjectured? can you not have conjectured? can he not have conjectured? can we not have conjectured? can you not have conjectured? can they not have conjectured?
V-ing perfect
can I not have been conjecturing? can you not have been conjecturing? can he not have been conjecturing? can we not have been conjecturing? can you not have been conjecturing? can they not have been conjecturing?