I could harass you could harass she could harass we could harass you could harass they could harass
V-ing form
I could be harassing you could be harassing she could be harassing we could be harassing you could be harassing they could be harassing
Perfect
I could have harassed you could have harassed she could have harassed we could have harassed you could have harassed they could have harassed
V-ing perfect
I could have been harassing you could have been harassing she could have been harassing we could have been harassing you could have been harassing they could have been harassing
Negation
Simple form
I couldn't harass you couldn't harass she couldn't harass we couldn't harass you couldn't harass they couldn't harass
V-ing form
I couldn't be harassing you couldn't be harassing she couldn't be harassing we couldn't be harassing you couldn't be harassing they couldn't be harassing
Perfect
I couldn't have harassed you couldn't have harassed she couldn't have harassed we couldn't have harassed you couldn't have harassed they couldn't have harassed
V-ing perfect
I couldn't have been harassing you couldn't have been harassing she couldn't have been harassing we couldn't have been harassing you couldn't have been harassing they couldn't have been harassing
Interrogative form
Simple form
could I harass? could you harass? could she harass? could we harass? could you harass? could they harass?
V-ing form
could I be harassing? could you be harassing? could she be harassing? could we be harassing? could you be harassing? could they be harassing?
Perfect
could I have harassed? could you have harassed? could she have harassed? could we have harassed? could you have harassed? could they have harassed?
V-ing perfect
could I have been harassing? could you have been harassing? could she have been harassing? could we have been harassing? could you have been harassing? could they have been harassing?
Interro-negative form
Simple form
couldn't I harass? couldn't you harass? couldn't she harass? couldn't we harass? couldn't you harass? couldn't they harass?
V-ing form
couldn't I be harassing? couldn't you be harassing? couldn't she be harassing? couldn't we be harassing? couldn't you be harassing? couldn't they be harassing?
Perfect
couldn't I have harassed? couldn't you have harassed? couldn't she have harassed? couldn't we have harassed? couldn't you have harassed? couldn't they have harassed?
V-ing perfect
couldn't I have been harassing? couldn't you have been harassing? couldn't she have been harassing? couldn't we have been harassing? couldn't you have been harassing? couldn't they have been harassing?