I can nobble you can nobble he can nobble we can nobble you can nobble they can nobble
V-ing form
I can be nobbling you can be nobbling he can be nobbling we can be nobbling you can be nobbling they can be nobbling
Perfect
I can have nobbled you can have nobbled he can have nobbled we can have nobbled you can have nobbled they can have nobbled
V-ing perfect
I can have been nobbling you can have been nobbling he can have been nobbling we can have been nobbling you can have been nobbling they can have been nobbling
Negation
Simple form
I can't nobble you can't nobble he can't nobble we can't nobble you can't nobble they can't nobble
V-ing form
I can't be nobbling you can't be nobbling he can't be nobbling we can't be nobbling you can't be nobbling they can't be nobbling
Perfect
I can't have nobbled you can't have nobbled he can't have nobbled we can't have nobbled you can't have nobbled they can't have nobbled
V-ing perfect
I can't have been nobbling you can't have been nobbling he can't have been nobbling we can't have been nobbling you can't have been nobbling they can't have been nobbling
Interrogative form
Simple form
can I nobble? can you nobble? can he nobble? can we nobble? can you nobble? can they nobble?
V-ing form
can I be nobbling? can you be nobbling? can he be nobbling? can we be nobbling? can you be nobbling? can they be nobbling?
Perfect
can I have nobbled? can you have nobbled? can he have nobbled? can we have nobbled? can you have nobbled? can they have nobbled?
V-ing perfect
can I have been nobbling? can you have been nobbling? can he have been nobbling? can we have been nobbling? can you have been nobbling? can they have been nobbling?
Interro-negative form
Simple form
can't I nobble? can't you nobble? can't he nobble? can't we nobble? can't you nobble? can't they nobble?
V-ing form
can't I be nobbling? can't you be nobbling? can't he be nobbling? can't we be nobbling? can't you be nobbling? can't they be nobbling?
Perfect
can't I have nobbled? can't you have nobbled? can't he have nobbled? can't we have nobbled? can't you have nobbled? can't they have nobbled?
V-ing perfect
can't I have been nobbling? can't you have been nobbling? can't he have been nobbling? can't we have been nobbling? can't you have been nobbling? can't they have been nobbling?