can joust
Regular verb: joust - jousted- jousted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can joust
you can joust
he can joust
we can joust
you can joust
they can joust 	I can be jousting
you can be jousting
he can be jousting
we can be jousting
you can be jousting
they can be jousting	I can have jousted
you can have jousted
he can have jousted
we can have jousted
you can have jousted
they can have jousted	I can have been jousting
you can have been jousting
he can have been jousting
we can have been jousting
you can have been jousting
they can have been jousting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot joust
you cannot joust
he cannot joust
we cannot joust
you cannot joust
they cannot joust 	I cannot be jousting
you cannot be jousting
he cannot be jousting
we cannot be jousting
you cannot be jousting
they cannot be jousting	I cannot have jousted
you cannot have jousted
he cannot have jousted
we cannot have jousted
you cannot have jousted
they cannot have jousted	I cannot have been jousting
you cannot have been jousting
he cannot have been jousting
we cannot have been jousting
you cannot have been jousting
they cannot have been jousting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I joust?
can you joust?
can he joust?
can we joust?
can you joust?
can they joust? 	can I be jousting?
can you be jousting?
can he be jousting?
can we be jousting?
can you be jousting?
can they be jousting? 	can I have jousted?
can you have jousted?
can he have jousted?
can we have jousted?
can you have jousted?
can they have jousted? 	can I have been jousting?
can you have been jousting?
can he have been jousting?
can we have been jousting?
can you have been jousting?
can they have been jousting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not joust?
can you not joust?
can he not joust?
can we not joust?
can you not joust?
can they not joust? 	can I not be jousting?
can you not be jousting?
can he not be jousting?
can we not be jousting?
can you not be jousting?
can they not be jousting? 	can I not have jousted?
can you not have jousted?
can he not have jousted?
can we not have jousted?
can you not have jousted?
can they not have jousted? 	can I not have been jousting?
can you not have been jousting?
can he not have been jousting?
can we not have been jousting?
can you not have been jousting?
can they not have been jousting?