English verb conjugation
CAN SUNBURN

Regular verb: sunburn - sunburned - sunburned

Affirmation

Simple form	V-ing form
I can sunburn you can sunburn he can sunburn we can sunburn you can sunburn they can sunburn	I can be sunburning you can be sunburning he can be sunburning we can be sunburning you can be sunburning they can be sunburning
Perfect	V-ing perfect
I can have sunburned you can have sunburned he can have sunburned we can have sunburned you can have sunburned they can have sunburned	I can have been sunburning you can have been sunburning he can have been sunburning we can have been sunburning you can have been sunburning they can have been sunburning

Negation

Simple form	V-ing form
I can't sunburn you can't sunburn he can't sunburn we can't sunburn you can't sunburn they can't sunburn	I can't be sunburning you can't be sunburning he can't be sunburning we can't be sunburning you can't be sunburning they can't be sunburning
Perfect	V-ing perfect
I can't have sunburned you can't have sunburned he can't have sunburned we can't have sunburned you can't have sunburned they can't have sunburned	I can't have been sunburning you can't have been sunburning he can't have been sunburning we can't have been sunburning you can't have been sunburning they can't have been sunburning

Interrogative form

Simple form	V-ing form
can I sunburn? can you sunburn? can he sunburn? can we sunburn? can you sunburn? can they sunburn?	can I be sunburning? can you be sunburning? can he be sunburning? can we be sunburning? can you be sunburning? can they be sunburning?
Perfect	V-ing perfect
can I have sunburned? can you have sunburned? can he have sunburned? can we have sunburned? can you have sunburned? can they have sunburned?	can I have been sunburning? can you have been sunburning? can he have been sunburning? can we have been sunburning? can you have been sunburning? can they have been sunburning?

Interro-negative form

Simple form	V-ing form
can't I sunburn? can't you sunburn? can't he sunburn? can't we sunburn? can't you sunburn? can't they sunburn?	can't I be sunburning? can't you be sunburning? can't he be sunburning? can't we be sunburning? can't you be sunburning? can't they be sunburning?
Perfect	V-ing perfect
can't I have sunburned? can't you have sunburned? can't he have sunburned? can't we have sunburned? can't you have sunburned? can't they have sunburned?	can't I have been sunburning? can't you have been sunburning? can't he have been sunburning? can't we have been sunburning? can't you have been sunburning? can't they have been sunburning?