I could moisten you could moisten he could moisten we could moisten you could moisten they could moisten
V-ing form
I could be moistening you could be moistening he could be moistening we could be moistening you could be moistening they could be moistening
Perfect
I could have moistened you could have moistened he could have moistened we could have moistened you could have moistened they could have moistened
V-ing perfect
I could have been moistening you could have been moistening he could have been moistening we could have been moistening you could have been moistening they could have been moistening
Negation
Simple form
I could not moisten you could not moisten he could not moisten we could not moisten you could not moisten they could not moisten
V-ing form
I could not be moistening you could not be moistening he could not be moistening we could not be moistening you could not be moistening they could not be moistening
Perfect
I could not have moistened you could not have moistened he could not have moistened we could not have moistened you could not have moistened they could not have moistened
V-ing perfect
I could not have been moistening you could not have been moistening he could not have been moistening we could not have been moistening you could not have been moistening they could not have been moistening
Interrogative form
Simple form
could I moisten? could you moisten? could he moisten? could we moisten? could you moisten? could they moisten?
V-ing form
could I be moistening? could you be moistening? could he be moistening? could we be moistening? could you be moistening? could they be moistening?
Perfect
could I have moistened? could you have moistened? could he have moistened? could we have moistened? could you have moistened? could they have moistened?
V-ing perfect
could I have been moistening? could you have been moistening? could he have been moistening? could we have been moistening? could you have been moistening? could they have been moistening?
Interro-negative form
Simple form
could I not moisten? could you not moisten? could he not moisten? could we not moisten? could you not moisten? could they not moisten?
V-ing form
could I not be moistening? could you not be moistening? could he not be moistening? could we not be moistening? could you not be moistening? could they not be moistening?
Perfect
could I not have moistened? could you not have moistened? could he not have moistened? could we not have moistened? could you not have moistened? could they not have moistened?
V-ing perfect
could I not have been moistening? could you not have been moistening? could he not have been moistening? could we not have been moistening? could you not have been moistening? could they not have been moistening?