English verb conjugation
CAN KILL

Regular verb: kill - killed - killed

Affirmation

Simple form	V-ing form
I can kill you can kill he can kill we can kill you can kill they can kill	I can be killing you can be killing he can be killing we can be killing you can be killing they can be killing
Perfect	V-ing perfect
I can have killed you can have killed he can have killed we can have killed you can have killed they can have killed	I can have been killing you can have been killing he can have been killing we can have been killing you can have been killing they can have been killing

Negation

Simple form	V-ing form
I can't kill you can't kill he can't kill we can't kill you can't kill they can't kill	I can't be killing you can't be killing he can't be killing we can't be killing you can't be killing they can't be killing
Perfect	V-ing perfect
I can't have killed you can't have killed he can't have killed we can't have killed you can't have killed they can't have killed	I can't have been killing you can't have been killing he can't have been killing we can't have been killing you can't have been killing they can't have been killing

Interrogative form

Simple form	V-ing form
can I kill? can you kill? can he kill? can we kill? can you kill? can they kill?	can I be killing? can you be killing? can he be killing? can we be killing? can you be killing? can they be killing?
Perfect	V-ing perfect
can I have killed? can you have killed? can he have killed? can we have killed? can you have killed? can they have killed?	can I have been killing? can you have been killing? can he have been killing? can we have been killing? can you have been killing? can they have been killing?

Interro-negative form

Simple form	V-ing form
can't I kill? can't you kill? can't he kill? can't we kill? can't you kill? can't they kill?	can't I be killing? can't you be killing? can't he be killing? can't we be killing? can't you be killing? can't they be killing?
Perfect	V-ing perfect
can't I have killed? can't you have killed? can't he have killed? can't we have killed? can't you have killed? can't they have killed?	can't I have been killing? can't you have been killing? can't he have been killing? can't we have been killing? can't you have been killing? can't they have been killing?