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 couldn't augur you couldn't augur he couldn't augur we couldn't augur you couldn't augur they couldn't augur
V-ing form
I couldn't be auguring you couldn't be auguring he couldn't be auguring we couldn't be auguring you couldn't be auguring they couldn't be auguring
Perfect
I couldn't have augured you couldn't have augured he couldn't have augured we couldn't have augured you couldn't have augured they couldn't have augured
V-ing perfect
I couldn't have been auguring you couldn't have been auguring he couldn't have been auguring we couldn't have been auguring you couldn't have been auguring they couldn't 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
couldn't I augur? couldn't you augur? couldn't he augur? couldn't we augur? couldn't you augur? couldn't they augur?
V-ing form
couldn't I be auguring? couldn't you be auguring? couldn't he be auguring? couldn't we be auguring? couldn't you be auguring? couldn't they be auguring?
Perfect
couldn't I have augured? couldn't you have augured? couldn't he have augured? couldn't we have augured? couldn't you have augured? couldn't they have augured?
V-ing perfect
couldn't I have been auguring? couldn't you have been auguring? couldn't he have been auguring? couldn't we have been auguring? couldn't you have been auguring? couldn't they have been auguring?