English verb conjugation
CAN SEVER

Regular verb: sever - severed - severed

Affirmation

Simple form	V-ing form
I can sever you can sever he can sever we can sever you can sever they can sever	I can be severing you can be severing he can be severing we can be severing you can be severing they can be severing
Perfect	V-ing perfect
I can have severed you can have severed he can have severed we can have severed you can have severed they can have severed	I can have been severing you can have been severing he can have been severing we can have been severing you can have been severing they can have been severing

Negation

Simple form	V-ing form
I can't sever you can't sever he can't sever we can't sever you can't sever they can't sever	I can't be severing you can't be severing he can't be severing we can't be severing you can't be severing they can't be severing
Perfect	V-ing perfect
I can't have severed you can't have severed he can't have severed we can't have severed you can't have severed they can't have severed	I can't have been severing you can't have been severing he can't have been severing we can't have been severing you can't have been severing they can't have been severing

Interrogative form

Simple form	V-ing form
can I sever? can you sever? can he sever? can we sever? can you sever? can they sever?	can I be severing? can you be severing? can he be severing? can we be severing? can you be severing? can they be severing?
Perfect	V-ing perfect
can I have severed? can you have severed? can he have severed? can we have severed? can you have severed? can they have severed?	can I have been severing? can you have been severing? can he have been severing? can we have been severing? can you have been severing? can they have been severing?

Interro-negative form

Simple form	V-ing form
can't I sever? can't you sever? can't he sever? can't we sever? can't you sever? can't they sever?	can't I be severing? can't you be severing? can't he be severing? can't we be severing? can't you be severing? can't they be severing?
Perfect	V-ing perfect
can't I have severed? can't you have severed? can't he have severed? can't we have severed? can't you have severed? can't they have severed?	can't I have been severing? can't you have been severing? can't he have been severing? can't we have been severing? can't you have been severing? can't they have been severing?