I could avoid you could avoid he could avoid we could avoid you could avoid they could avoid
V-ing form
I could be avoiding you could be avoiding he could be avoiding we could be avoiding you could be avoiding they could be avoiding
Perfect
I could have avoided you could have avoided he could have avoided we could have avoided you could have avoided they could have avoided
V-ing perfect
I could have been avoiding you could have been avoiding he could have been avoiding we could have been avoiding you could have been avoiding they could have been avoiding
Negation
Simple form
I could not avoid you could not avoid he could not avoid we could not avoid you could not avoid they could not avoid
V-ing form
I could not be avoiding you could not be avoiding he could not be avoiding we could not be avoiding you could not be avoiding they could not be avoiding
Perfect
I could not have avoided you could not have avoided he could not have avoided we could not have avoided you could not have avoided they could not have avoided
V-ing perfect
I could not have been avoiding you could not have been avoiding he could not have been avoiding we could not have been avoiding you could not have been avoiding they could not have been avoiding
Interrogative form
Simple form
could I avoid? could you avoid? could he avoid? could we avoid? could you avoid? could they avoid?
V-ing form
could I be avoiding? could you be avoiding? could he be avoiding? could we be avoiding? could you be avoiding? could they be avoiding?
Perfect
could I have avoided? could you have avoided? could he have avoided? could we have avoided? could you have avoided? could they have avoided?
V-ing perfect
could I have been avoiding? could you have been avoiding? could he have been avoiding? could we have been avoiding? could you have been avoiding? could they have been avoiding?
Interro-negative form
Simple form
could I not avoid? could you not avoid? could he not avoid? could we not avoid? could you not avoid? could they not avoid?
V-ing form
could I not be avoiding? could you not be avoiding? could he not be avoiding? could we not be avoiding? could you not be avoiding? could they not be avoiding?
Perfect
could I not have avoided? could you not have avoided? could he not have avoided? could we not have avoided? could you not have avoided? could they not have avoided?
V-ing perfect
could I not have been avoiding? could you not have been avoiding? could he not have been avoiding? could we not have been avoiding? could you not have been avoiding? could they not have been avoiding?