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