I could soliloquize you could soliloquize he could soliloquize we could soliloquize you could soliloquize they could soliloquize
V-ing form
I could be soliloquizing you could be soliloquizing he could be soliloquizing we could be soliloquizing you could be soliloquizing they could be soliloquizing
Perfect
I could have soliloquized you could have soliloquized he could have soliloquized we could have soliloquized you could have soliloquized they could have soliloquized
V-ing perfect
I could have been soliloquizing you could have been soliloquizing he could have been soliloquizing we could have been soliloquizing you could have been soliloquizing they could have been soliloquizing
Negation
Simple form
I couldn't soliloquize you couldn't soliloquize he couldn't soliloquize we couldn't soliloquize you couldn't soliloquize they couldn't soliloquize
V-ing form
I couldn't be soliloquizing you couldn't be soliloquizing he couldn't be soliloquizing we couldn't be soliloquizing you couldn't be soliloquizing they couldn't be soliloquizing
Perfect
I couldn't have soliloquized you couldn't have soliloquized he couldn't have soliloquized we couldn't have soliloquized you couldn't have soliloquized they couldn't have soliloquized
V-ing perfect
I couldn't have been soliloquizing you couldn't have been soliloquizing he couldn't have been soliloquizing we couldn't have been soliloquizing you couldn't have been soliloquizing they couldn't have been soliloquizing
Interrogative form
Simple form
could I soliloquize? could you soliloquize? could he soliloquize? could we soliloquize? could you soliloquize? could they soliloquize?
V-ing form
could I be soliloquizing? could you be soliloquizing? could he be soliloquizing? could we be soliloquizing? could you be soliloquizing? could they be soliloquizing?
Perfect
could I have soliloquized? could you have soliloquized? could he have soliloquized? could we have soliloquized? could you have soliloquized? could they have soliloquized?
V-ing perfect
could I have been soliloquizing? could you have been soliloquizing? could he have been soliloquizing? could we have been soliloquizing? could you have been soliloquizing? could they have been soliloquizing?
Interro-negative form
Simple form
couldn't I soliloquize? couldn't you soliloquize? couldn't he soliloquize? couldn't we soliloquize? couldn't you soliloquize? couldn't they soliloquize?
V-ing form
couldn't I be soliloquizing? couldn't you be soliloquizing? couldn't he be soliloquizing? couldn't we be soliloquizing? couldn't you be soliloquizing? couldn't they be soliloquizing?
Perfect
couldn't I have soliloquized? couldn't you have soliloquized? couldn't he have soliloquized? couldn't we have soliloquized? couldn't you have soliloquized? couldn't they have soliloquized?
V-ing perfect
couldn't I have been soliloquizing? couldn't you have been soliloquizing? couldn't he have been soliloquizing? couldn't we have been soliloquizing? couldn't you have been soliloquizing? couldn't they have been soliloquizing?