I can bore you can bore she can bore we can bore you can bore they can bore
V-ing form
I can be boring you can be boring she can be boring we can be boring you can be boring they can be boring
Perfect
I can have bored you can have bored she can have bored we can have bored you can have bored they can have bored
V-ing perfect
I can have been boring you can have been boring she can have been boring we can have been boring you can have been boring they can have been boring
Negation
Simple form
I can't bore you can't bore she can't bore we can't bore you can't bore they can't bore
V-ing form
I can't be boring you can't be boring she can't be boring we can't be boring you can't be boring they can't be boring
Perfect
I can't have bored you can't have bored she can't have bored we can't have bored you can't have bored they can't have bored
V-ing perfect
I can't have been boring you can't have been boring she can't have been boring we can't have been boring you can't have been boring they can't have been boring
Interrogative form
Simple form
can I bore? can you bore? can she bore? can we bore? can you bore? can they bore?
V-ing form
can I be boring? can you be boring? can she be boring? can we be boring? can you be boring? can they be boring?
Perfect
can I have bored? can you have bored? can she have bored? can we have bored? can you have bored? can they have bored?
V-ing perfect
can I have been boring? can you have been boring? can she have been boring? can we have been boring? can you have been boring? can they have been boring?
Interro-negative form
Simple form
can't I bore? can't you bore? can't she bore? can't we bore? can't you bore? can't they bore?
V-ing form
can't I be boring? can't you be boring? can't she be boring? can't we be boring? can't you be boring? can't they be boring?
Perfect
can't I have bored? can't you have bored? can't she have bored? can't we have bored? can't you have bored? can't they have bored?
V-ing perfect
can't I have been boring? can't you have been boring? can't she have been boring? can't we have been boring? can't you have been boring? can't they have been boring?