I can perk you can perk he can perk we can perk you can perk they can perk
Form mit V-ing
I can be perking you can be perking he can be perking we can be perking you can be perking they can be perking
Perfekt
I can have perked you can have perked he can have perked we can have perked you can have perked they can have perked
Perfekt mit V-ing
I can have been perking you can have been perking he can have been perking we can have been perking you can have been perking they can have been perking
Negation
Einfache Form
I cannot perk you cannot perk he cannot perk we cannot perk you cannot perk they cannot perk
Form mit V-ing
I cannot be perking you cannot be perking he cannot be perking we cannot be perking you cannot be perking they cannot be perking
Perfekt
I cannot have perked you cannot have perked he cannot have perked we cannot have perked you cannot have perked they cannot have perked
Perfekt mit V-ing
I cannot have been perking you cannot have been perking he cannot have been perking we cannot have been perking you cannot have been perking they cannot have been perking
Fragende Form
Einfache Form
can I perk? can you perk? can he perk? can we perk? can you perk? can they perk?
Form mit V-ing
can I be perking? can you be perking? can he be perking? can we be perking? can you be perking? can they be perking?
Perfekt
can I have perked? can you have perked? can he have perked? can we have perked? can you have perked? can they have perked?
Perfekt mit V-ing
can I have been perking? can you have been perking? can he have been perking? can we have been perking? can you have been perking? can they have been perking?
Fragende Negation Form
Einfache Form
can I not perk? can you not perk? can he not perk? can we not perk? can you not perk? can they not perk?
Form mit V-ing
can I not be perking? can you not be perking? can he not be perking? can we not be perking? can you not be perking? can they not be perking?
Perfekt
can I not have perked? can you not have perked? can he not have perked? can we not have perked? can you not have perked? can they not have perked?
Perfekt mit V-ing
can I not have been perking? can you not have been perking? can he not have been perking? can we not have been perking? can you not have been perking? can they not have been perking?