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