I can buddy you can buddy he can buddy we can buddy you can buddy they can buddy
V-ing form
I can be buddying you can be buddying he can be buddying we can be buddying you can be buddying they can be buddying
Perfect
I can have buddied you can have buddied he can have buddied we can have buddied you can have buddied they can have buddied
V-ing perfect
I can have been buddying you can have been buddying he can have been buddying we can have been buddying you can have been buddying they can have been buddying
Negation
Simple form
I can't buddy you can't buddy he can't buddy we can't buddy you can't buddy they can't buddy
V-ing form
I can't be buddying you can't be buddying he can't be buddying we can't be buddying you can't be buddying they can't be buddying
Perfect
I can't have buddied you can't have buddied he can't have buddied we can't have buddied you can't have buddied they can't have buddied
V-ing perfect
I can't have been buddying you can't have been buddying he can't have been buddying we can't have been buddying you can't have been buddying they can't have been buddying
Interrogative form
Simple form
can I buddy? can you buddy? can he buddy? can we buddy? can you buddy? can they buddy?
V-ing form
can I be buddying? can you be buddying? can he be buddying? can we be buddying? can you be buddying? can they be buddying?
Perfect
can I have buddied? can you have buddied? can he have buddied? can we have buddied? can you have buddied? can they have buddied?
V-ing perfect
can I have been buddying? can you have been buddying? can he have been buddying? can we have been buddying? can you have been buddying? can they have been buddying?
Interro-negative form
Simple form
can't I buddy? can't you buddy? can't he buddy? can't we buddy? can't you buddy? can't they buddy?
V-ing form
can't I be buddying? can't you be buddying? can't he be buddying? can't we be buddying? can't you be buddying? can't they be buddying?
Perfect
can't I have buddied? can't you have buddied? can't he have buddied? can't we have buddied? can't you have buddied? can't they have buddied?
V-ing perfect
can't I have been buddying? can't you have been buddying? can't he have been buddying? can't we have been buddying? can't you have been buddying? can't they have been buddying?