I could diagnose you could diagnose he could diagnose we could diagnose you could diagnose they could diagnose
Forme en V-ing
I could be diagnosing you could be diagnosing he could be diagnosing we could be diagnosing you could be diagnosing they could be diagnosing
Perfect
I could have diagnosed you could have diagnosed he could have diagnosed we could have diagnosed you could have diagnosed they could have diagnosed
Perfect en V-ing
I could have been diagnosing you could have been diagnosing he could have been diagnosing we could have been diagnosing you could have been diagnosing they could have been diagnosing
Négation
Forme simple
I couldn't diagnose you couldn't diagnose he couldn't diagnose we couldn't diagnose you couldn't diagnose they couldn't diagnose
Forme en V-ing
I couldn't be diagnosing you couldn't be diagnosing he couldn't be diagnosing we couldn't be diagnosing you couldn't be diagnosing they couldn't be diagnosing
Perfect
I couldn't have diagnosed you couldn't have diagnosed he couldn't have diagnosed we couldn't have diagnosed you couldn't have diagnosed they couldn't have diagnosed
Perfect en V-ing
I couldn't have been diagnosing you couldn't have been diagnosing he couldn't have been diagnosing we couldn't have been diagnosing you couldn't have been diagnosing they couldn't have been diagnosing
Forme interrogative
Forme simple
could I diagnose? could you diagnose? could he diagnose? could we diagnose? could you diagnose? could they diagnose?
Forme en V-ing
could I be diagnosing? could you be diagnosing? could he be diagnosing? could we be diagnosing? could you be diagnosing? could they be diagnosing?
Perfect
could I have diagnosed? could you have diagnosed? could he have diagnosed? could we have diagnosed? could you have diagnosed? could they have diagnosed?
Perfect en V-ing
could I have been diagnosing? could you have been diagnosing? could he have been diagnosing? could we have been diagnosing? could you have been diagnosing? could they have been diagnosing?
Forme interro-négative
Forme simple
couldn't I diagnose? couldn't you diagnose? couldn't he diagnose? couldn't we diagnose? couldn't you diagnose? couldn't they diagnose?
Forme en V-ing
couldn't I be diagnosing? couldn't you be diagnosing? couldn't he be diagnosing? couldn't we be diagnosing? couldn't you be diagnosing? couldn't they be diagnosing?
Perfect
couldn't I have diagnosed? couldn't you have diagnosed? couldn't he have diagnosed? couldn't we have diagnosed? couldn't you have diagnosed? couldn't they have diagnosed?
Perfect en V-ing
couldn't I have been diagnosing? couldn't you have been diagnosing? couldn't he have been diagnosing? couldn't we have been diagnosing? couldn't you have been diagnosing? couldn't they have been diagnosing?