English verb conjugation
CAN HARM

Regular verb: harm - harmed - harmed

Affirmation

Simple form	V-ing form
I can harm you can harm he can harm we can harm you can harm they can harm	I can be harming you can be harming he can be harming we can be harming you can be harming they can be harming
Perfect	V-ing perfect
I can have harmed you can have harmed he can have harmed we can have harmed you can have harmed they can have harmed	I can have been harming you can have been harming he can have been harming we can have been harming you can have been harming they can have been harming

Negation

Simple form	V-ing form
I can't harm you can't harm he can't harm we can't harm you can't harm they can't harm	I can't be harming you can't be harming he can't be harming we can't be harming you can't be harming they can't be harming
Perfect	V-ing perfect
I can't have harmed you can't have harmed he can't have harmed we can't have harmed you can't have harmed they can't have harmed	I can't have been harming you can't have been harming he can't have been harming we can't have been harming you can't have been harming they can't have been harming

Interrogative form

Simple form	V-ing form
can I harm? can you harm? can he harm? can we harm? can you harm? can they harm?	can I be harming? can you be harming? can he be harming? can we be harming? can you be harming? can they be harming?
Perfect	V-ing perfect
can I have harmed? can you have harmed? can he have harmed? can we have harmed? can you have harmed? can they have harmed?	can I have been harming? can you have been harming? can he have been harming? can we have been harming? can you have been harming? can they have been harming?

Interro-negative form

Simple form	V-ing form
can't I harm? can't you harm? can't he harm? can't we harm? can't you harm? can't they harm?	can't I be harming? can't you be harming? can't he be harming? can't we be harming? can't you be harming? can't they be harming?
Perfect	V-ing perfect
can't I have harmed? can't you have harmed? can't he have harmed? can't we have harmed? can't you have harmed? can't they have harmed?	can't I have been harming? can't you have been harming? can't he have been harming? can't we have been harming? can't you have been harming? can't they have been harming?