I could authenticate you could authenticate he could authenticate we could authenticate you could authenticate they could authenticate
Form mit V-ing
I could be authenticating you could be authenticating he could be authenticating we could be authenticating you could be authenticating they could be authenticating
Perfekt
I could have authenticated you could have authenticated he could have authenticated we could have authenticated you could have authenticated they could have authenticated
Perfekt mit V-ing
I could have been authenticating you could have been authenticating he could have been authenticating we could have been authenticating you could have been authenticating they could have been authenticating
Negation
Einfache Form
I couldn't authenticate you couldn't authenticate he couldn't authenticate we couldn't authenticate you couldn't authenticate they couldn't authenticate
Form mit V-ing
I couldn't be authenticating you couldn't be authenticating he couldn't be authenticating we couldn't be authenticating you couldn't be authenticating they couldn't be authenticating
Perfekt
I couldn't have authenticated you couldn't have authenticated he couldn't have authenticated we couldn't have authenticated you couldn't have authenticated they couldn't have authenticated
Perfekt mit V-ing
I couldn't have been authenticating you couldn't have been authenticating he couldn't have been authenticating we couldn't have been authenticating you couldn't have been authenticating they couldn't have been authenticating
Fragende Form
Einfache Form
could I authenticate? could you authenticate? could he authenticate? could we authenticate? could you authenticate? could they authenticate?
Form mit V-ing
could I be authenticating? could you be authenticating? could he be authenticating? could we be authenticating? could you be authenticating? could they be authenticating?
Perfekt
could I have authenticated? could you have authenticated? could he have authenticated? could we have authenticated? could you have authenticated? could they have authenticated?
Perfekt mit V-ing
could I have been authenticating? could you have been authenticating? could he have been authenticating? could we have been authenticating? could you have been authenticating? could they have been authenticating?
Fragende Negation Form
Einfache Form
couldn't I authenticate? couldn't you authenticate? couldn't he authenticate? couldn't we authenticate? couldn't you authenticate? couldn't they authenticate?
Form mit V-ing
couldn't I be authenticating? couldn't you be authenticating? couldn't he be authenticating? couldn't we be authenticating? couldn't you be authenticating? couldn't they be authenticating?
Perfekt
couldn't I have authenticated? couldn't you have authenticated? couldn't he have authenticated? couldn't we have authenticated? couldn't you have authenticated? couldn't they have authenticated?
Perfekt mit V-ing
couldn't I have been authenticating? couldn't you have been authenticating? couldn't he have been authenticating? couldn't we have been authenticating? couldn't you have been authenticating? couldn't they have been authenticating?