English verb conjugation
CAN OVERTURN

Regular verb: overturn - overturned - overturned

Affirmation

Simple form	V-ing form
I can overturn you can overturn he can overturn we can overturn you can overturn they can overturn	I can be overturning you can be overturning he can be overturning we can be overturning you can be overturning they can be overturning
Perfect	V-ing perfect
I can have overturned you can have overturned he can have overturned we can have overturned you can have overturned they can have overturned	I can have been overturning you can have been overturning he can have been overturning we can have been overturning you can have been overturning they can have been overturning

Negation

Simple form	V-ing form
I can't overturn you can't overturn he can't overturn we can't overturn you can't overturn they can't overturn	I can't be overturning you can't be overturning he can't be overturning we can't be overturning you can't be overturning they can't be overturning
Perfect	V-ing perfect
I can't have overturned you can't have overturned he can't have overturned we can't have overturned you can't have overturned they can't have overturned	I can't have been overturning you can't have been overturning he can't have been overturning we can't have been overturning you can't have been overturning they can't have been overturning

Interrogative form

Simple form	V-ing form
can I overturn? can you overturn? can he overturn? can we overturn? can you overturn? can they overturn?	can I be overturning? can you be overturning? can he be overturning? can we be overturning? can you be overturning? can they be overturning?
Perfect	V-ing perfect
can I have overturned? can you have overturned? can he have overturned? can we have overturned? can you have overturned? can they have overturned?	can I have been overturning? can you have been overturning? can he have been overturning? can we have been overturning? can you have been overturning? can they have been overturning?

Interro-negative form

Simple form	V-ing form
can't I overturn? can't you overturn? can't he overturn? can't we overturn? can't you overturn? can't they overturn?	can't I be overturning? can't you be overturning? can't he be overturning? can't we be overturning? can't you be overturning? can't they be overturning?
Perfect	V-ing perfect
can't I have overturned? can't you have overturned? can't he have overturned? can't we have overturned? can't you have overturned? can't they have overturned?	can't I have been overturning? can't you have been overturning? can't he have been overturning? can't we have been overturning? can't you have been overturning? can't they have been overturning?