I could woodshed you could woodshed he could woodshed we could woodshed you could woodshed they could woodshed
V-ing form
I could be woodsheding you could be woodsheding he could be woodsheding we could be woodsheding you could be woodsheding they could be woodsheding
Perfect
I could have woodsheded you could have woodsheded he could have woodsheded we could have woodsheded you could have woodsheded they could have woodsheded
V-ing perfect
I could have been woodsheding you could have been woodsheding he could have been woodsheding we could have been woodsheding you could have been woodsheding they could have been woodsheding
Negation
Simple form
I could not woodshed you could not woodshed he could not woodshed we could not woodshed you could not woodshed they could not woodshed
V-ing form
I could not be woodsheding you could not be woodsheding he could not be woodsheding we could not be woodsheding you could not be woodsheding they could not be woodsheding
Perfect
I could not have woodsheded you could not have woodsheded he could not have woodsheded we could not have woodsheded you could not have woodsheded they could not have woodsheded
V-ing perfect
I could not have been woodsheding you could not have been woodsheding he could not have been woodsheding we could not have been woodsheding you could not have been woodsheding they could not have been woodsheding
Interrogative form
Simple form
could I woodshed? could you woodshed? could he woodshed? could we woodshed? could you woodshed? could they woodshed?
V-ing form
could I be woodsheding? could you be woodsheding? could he be woodsheding? could we be woodsheding? could you be woodsheding? could they be woodsheding?
Perfect
could I have woodsheded? could you have woodsheded? could he have woodsheded? could we have woodsheded? could you have woodsheded? could they have woodsheded?
V-ing perfect
could I have been woodsheding? could you have been woodsheding? could he have been woodsheding? could we have been woodsheding? could you have been woodsheding? could they have been woodsheding?
Interro-negative form
Simple form
could I not woodshed? could you not woodshed? could he not woodshed? could we not woodshed? could you not woodshed? could they not woodshed?
V-ing form
could I not be woodsheding? could you not be woodsheding? could he not be woodsheding? could we not be woodsheding? could you not be woodsheding? could they not be woodsheding?
Perfect
could I not have woodsheded? could you not have woodsheded? could he not have woodsheded? could we not have woodsheded? could you not have woodsheded? could they not have woodsheded?
V-ing perfect
could I not have been woodsheding? could you not have been woodsheding? could he not have been woodsheding? could we not have been woodsheding? could you not have been woodsheding? could they not have been woodsheding?