English verb conjugation
COULD ENDANGER

Regular verb: endanger - endangered - endangered

Affirmation

Simple form	V-ing form
I could endanger you could endanger she could endanger we could endanger you could endanger they could endanger	I could be endangering you could be endangering she could be endangering we could be endangering you could be endangering they could be endangering
Perfect	V-ing perfect
I could have endangered you could have endangered she could have endangered we could have endangered you could have endangered they could have endangered	I could have been endangering you could have been endangering she could have been endangering we could have been endangering you could have been endangering they could have been endangering

Negation

Simple form	V-ing form
I couldn't endanger you couldn't endanger she couldn't endanger we couldn't endanger you couldn't endanger they couldn't endanger	I couldn't be endangering you couldn't be endangering she couldn't be endangering we couldn't be endangering you couldn't be endangering they couldn't be endangering
Perfect	V-ing perfect
I couldn't have endangered you couldn't have endangered she couldn't have endangered we couldn't have endangered you couldn't have endangered they couldn't have endangered	I couldn't have been endangering you couldn't have been endangering she couldn't have been endangering we couldn't have been endangering you couldn't have been endangering they couldn't have been endangering

Interrogative form

Simple form	V-ing form
could I endanger? could you endanger? could she endanger? could we endanger? could you endanger? could they endanger?	could I be endangering? could you be endangering? could she be endangering? could we be endangering? could you be endangering? could they be endangering?
Perfect	V-ing perfect
could I have endangered? could you have endangered? could she have endangered? could we have endangered? could you have endangered? could they have endangered?	could I have been endangering? could you have been endangering? could she have been endangering? could we have been endangering? could you have been endangering? could they have been endangering?

Interro-negative form

Simple form	V-ing form
couldn't I endanger? couldn't you endanger? couldn't she endanger? couldn't we endanger? couldn't you endanger? couldn't they endanger?	couldn't I be endangering? couldn't you be endangering? couldn't she be endangering? couldn't we be endangering? couldn't you be endangering? couldn't they be endangering?
Perfect	V-ing perfect
couldn't I have endangered? couldn't you have endangered? couldn't she have endangered? couldn't we have endangered? couldn't you have endangered? couldn't they have endangered?	couldn't I have been endangering? couldn't you have been endangering? couldn't she have been endangering? couldn't we have been endangering? couldn't you have been endangering? couldn't they have been endangering?