I could augur you could augur he could augur we could augur you could augur they could augur
V-ing form
I could be auguring you could be auguring he could be auguring we could be auguring you could be auguring they could be auguring
Perfect
I could have augured you could have augured he could have augured we could have augured you could have augured they could have augured
V-ing perfect
I could have been auguring you could have been auguring he could have been auguring we could have been auguring you could have been auguring they could have been auguring
Negation
Simple form
I could not augur you could not augur he could not augur we could not augur you could not augur they could not augur
V-ing form
I could not be auguring you could not be auguring he could not be auguring we could not be auguring you could not be auguring they could not be auguring
Perfect
I could not have augured you could not have augured he could not have augured we could not have augured you could not have augured they could not have augured
V-ing perfect
I could not have been auguring you could not have been auguring he could not have been auguring we could not have been auguring you could not have been auguring they could not have been auguring
Interrogative form
Simple form
could I augur? could you augur? could he augur? could we augur? could you augur? could they augur?
V-ing form
could I be auguring? could you be auguring? could he be auguring? could we be auguring? could you be auguring? could they be auguring?
Perfect
could I have augured? could you have augured? could he have augured? could we have augured? could you have augured? could they have augured?
V-ing perfect
could I have been auguring? could you have been auguring? could he have been auguring? could we have been auguring? could you have been auguring? could they have been auguring?
Interro-negative form
Simple form
could I not augur? could you not augur? could he not augur? could we not augur? could you not augur? could they not augur?
V-ing form
could I not be auguring? could you not be auguring? could he not be auguring? could we not be auguring? could you not be auguring? could they not be auguring?
Perfect
could I not have augured? could you not have augured? could he not have augured? could we not have augured? could you not have augured? could they not have augured?
V-ing perfect
could I not have been auguring? could you not have been auguring? could he not have been auguring? could we not have been auguring? could you not have been auguring? could they not have been auguring?