I can endanger you can endanger he can endanger we can endanger you can endanger they can endanger
V-ing form
I can be endangering you can be endangering he can be endangering we can be endangering you can be endangering they can be endangering
Perfect
I can have endangered you can have endangered he can have endangered we can have endangered you can have endangered they can have endangered
V-ing perfect
I can have been endangering you can have been endangering he can have been endangering we can have been endangering you can have been endangering they can have been endangering
Negation
Simple form
I cannot endanger you cannot endanger he cannot endanger we cannot endanger you cannot endanger they cannot endanger
V-ing form
I cannot be endangering you cannot be endangering he cannot be endangering we cannot be endangering you cannot be endangering they cannot be endangering
Perfect
I cannot have endangered you cannot have endangered he cannot have endangered we cannot have endangered you cannot have endangered they cannot have endangered
V-ing perfect
I cannot have been endangering you cannot have been endangering he cannot have been endangering we cannot have been endangering you cannot have been endangering they cannot have been endangering
Interrogative form
Simple form
can I endanger? can you endanger? can he endanger? can we endanger? can you endanger? can they endanger?
V-ing form
can I be endangering? can you be endangering? can he be endangering? can we be endangering? can you be endangering? can they be endangering?
Perfect
can I have endangered? can you have endangered? can he have endangered? can we have endangered? can you have endangered? can they have endangered?
V-ing perfect
can I have been endangering? can you have been endangering? can he have been endangering? can we have been endangering? can you have been endangering? can they have been endangering?
Interro-negative form
Simple form
can I not endanger? can you not endanger? can he not endanger? can we not endanger? can you not endanger? can they not endanger?
V-ing form
can I not be endangering? can you not be endangering? can he not be endangering? can we not be endangering? can you not be endangering? can they not be endangering?
Perfect
can I not have endangered? can you not have endangered? can he not have endangered? can we not have endangered? can you not have endangered? can they not have endangered?
V-ing perfect
can I not have been endangering? can you not have been endangering? can he not have been endangering? can we not have been endangering? can you not have been endangering? can they not have been endangering?