English verb conjugation
CAN WARM

Regular verb: warm - warmed - warmed

Affirmation

Simple form	V-ing form
I can warm you can warm he can warm we can warm you can warm they can warm	I can be warming you can be warming he can be warming we can be warming you can be warming they can be warming
Perfect	V-ing perfect
I can have warmed you can have warmed he can have warmed we can have warmed you can have warmed they can have warmed	I can have been warming you can have been warming he can have been warming we can have been warming you can have been warming they can have been warming

Negation

Simple form	V-ing form
I can't warm you can't warm he can't warm we can't warm you can't warm they can't warm	I can't be warming you can't be warming he can't be warming we can't be warming you can't be warming they can't be warming
Perfect	V-ing perfect
I can't have warmed you can't have warmed he can't have warmed we can't have warmed you can't have warmed they can't have warmed	I can't have been warming you can't have been warming he can't have been warming we can't have been warming you can't have been warming they can't have been warming

Interrogative form

Simple form	V-ing form
can I warm? can you warm? can he warm? can we warm? can you warm? can they warm?	can I be warming? can you be warming? can he be warming? can we be warming? can you be warming? can they be warming?
Perfect	V-ing perfect
can I have warmed? can you have warmed? can he have warmed? can we have warmed? can you have warmed? can they have warmed?	can I have been warming? can you have been warming? can he have been warming? can we have been warming? can you have been warming? can they have been warming?

Interro-negative form

Simple form	V-ing form
can't I warm? can't you warm? can't he warm? can't we warm? can't you warm? can't they warm?	can't I be warming? can't you be warming? can't he be warming? can't we be warming? can't you be warming? can't they be warming?
Perfect	V-ing perfect
can't I have warmed? can't you have warmed? can't he have warmed? can't we have warmed? can't you have warmed? can't they have warmed?	can't I have been warming? can't you have been warming? can't he have been warming? can't we have been warming? can't you have been warming? can't they have been warming?