I can joust you can joust he can joust we can joust you can joust they can joust
V-ing form
I can be jousting you can be jousting he can be jousting we can be jousting you can be jousting they can be jousting
Perfect
I can have jousted you can have jousted he can have jousted we can have jousted you can have jousted they can have jousted
V-ing perfect
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
I can't joust you can't joust he can't joust we can't joust you can't joust they can't joust
V-ing form
I can't be jousting you can't be jousting he can't be jousting we can't be jousting you can't be jousting they can't be jousting
Perfect
I can't have jousted you can't have jousted he can't have jousted we can't have jousted you can't have jousted they can't have jousted
V-ing perfect
I can't have been jousting you can't have been jousting he can't have been jousting we can't have been jousting you can't have been jousting they can't have been jousting
Interrogative form
Simple form
can I joust? can you joust? can he joust? can we joust? can you joust? can they joust?
V-ing form
can I be jousting? can you be jousting? can he be jousting? can we be jousting? can you be jousting? can they be jousting?
Perfect
can I have jousted? can you have jousted? can he have jousted? can we have jousted? can you have jousted? can they have jousted?
V-ing perfect
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
can't I joust? can't you joust? can't he joust? can't we joust? can't you joust? can't they joust?
V-ing form
can't I be jousting? can't you be jousting? can't he be jousting? can't we be jousting? can't you be jousting? can't they be jousting?
Perfect
can't I have jousted? can't you have jousted? can't he have jousted? can't we have jousted? can't you have jousted? can't they have jousted?
V-ing perfect
can't I have been jousting? can't you have been jousting? can't he have been jousting? can't we have been jousting? can't you have been jousting? can't they have been jousting?