English verb conjugation
CAN BURN

Regular verb: burn - burned - burned

Affirmation

Simple form	V-ing form
I can burn you can burn he can burn we can burn you can burn they can burn	I can be burning you can be burning he can be burning we can be burning you can be burning they can be burning
Perfect	V-ing perfect
I can have burned you can have burned he can have burned we can have burned you can have burned they can have burned	I can have been burning you can have been burning he can have been burning we can have been burning you can have been burning they can have been burning

Negation

Simple form	V-ing form
I can't burn you can't burn he can't burn we can't burn you can't burn they can't burn	I can't be burning you can't be burning he can't be burning we can't be burning you can't be burning they can't be burning
Perfect	V-ing perfect
I can't have burned you can't have burned he can't have burned we can't have burned you can't have burned they can't have burned	I can't have been burning you can't have been burning he can't have been burning we can't have been burning you can't have been burning they can't have been burning

Interrogative form

Simple form	V-ing form
can I burn? can you burn? can he burn? can we burn? can you burn? can they burn?	can I be burning? can you be burning? can he be burning? can we be burning? can you be burning? can they be burning?
Perfect	V-ing perfect
can I have burned? can you have burned? can he have burned? can we have burned? can you have burned? can they have burned?	can I have been burning? can you have been burning? can he have been burning? can we have been burning? can you have been burning? can they have been burning?

Interro-negative form

Simple form	V-ing form
can't I burn? can't you burn? can't he burn? can't we burn? can't you burn? can't they burn?	can't I be burning? can't you be burning? can't he be burning? can't we be burning? can't you be burning? can't they be burning?
Perfect	V-ing perfect
can't I have burned? can't you have burned? can't he have burned? can't we have burned? can't you have burned? can't they have burned?	can't I have been burning? can't you have been burning? can't he have been burning? can't we have been burning? can't you have been burning? can't they have been burning?