I could misdiagnose you could misdiagnose she could misdiagnose we could misdiagnose you could misdiagnose they could misdiagnose
V-ing form
I could be misdiagnosing you could be misdiagnosing she could be misdiagnosing we could be misdiagnosing you could be misdiagnosing they could be misdiagnosing
Perfect
I could have misdiagnosed you could have misdiagnosed she could have misdiagnosed we could have misdiagnosed you could have misdiagnosed they could have misdiagnosed
V-ing perfect
I could have been misdiagnosing you could have been misdiagnosing she could have been misdiagnosing we could have been misdiagnosing you could have been misdiagnosing they could have been misdiagnosing
Negation
Simple form
I couldn't misdiagnose you couldn't misdiagnose she couldn't misdiagnose we couldn't misdiagnose you couldn't misdiagnose they couldn't misdiagnose
V-ing form
I couldn't be misdiagnosing you couldn't be misdiagnosing she couldn't be misdiagnosing we couldn't be misdiagnosing you couldn't be misdiagnosing they couldn't be misdiagnosing
Perfect
I couldn't have misdiagnosed you couldn't have misdiagnosed she couldn't have misdiagnosed we couldn't have misdiagnosed you couldn't have misdiagnosed they couldn't have misdiagnosed
V-ing perfect
I couldn't have been misdiagnosing you couldn't have been misdiagnosing she couldn't have been misdiagnosing we couldn't have been misdiagnosing you couldn't have been misdiagnosing they couldn't have been misdiagnosing
Interrogative form
Simple form
could I misdiagnose? could you misdiagnose? could she misdiagnose? could we misdiagnose? could you misdiagnose? could they misdiagnose?
V-ing form
could I be misdiagnosing? could you be misdiagnosing? could she be misdiagnosing? could we be misdiagnosing? could you be misdiagnosing? could they be misdiagnosing?
Perfect
could I have misdiagnosed? could you have misdiagnosed? could she have misdiagnosed? could we have misdiagnosed? could you have misdiagnosed? could they have misdiagnosed?
V-ing perfect
could I have been misdiagnosing? could you have been misdiagnosing? could she have been misdiagnosing? could we have been misdiagnosing? could you have been misdiagnosing? could they have been misdiagnosing?
Interro-negative form
Simple form
couldn't I misdiagnose? couldn't you misdiagnose? couldn't she misdiagnose? couldn't we misdiagnose? couldn't you misdiagnose? couldn't they misdiagnose?
V-ing form
couldn't I be misdiagnosing? couldn't you be misdiagnosing? couldn't she be misdiagnosing? couldn't we be misdiagnosing? couldn't you be misdiagnosing? couldn't they be misdiagnosing?
Perfect
couldn't I have misdiagnosed? couldn't you have misdiagnosed? couldn't she have misdiagnosed? couldn't we have misdiagnosed? couldn't you have misdiagnosed? couldn't they have misdiagnosed?
V-ing perfect
couldn't I have been misdiagnosing? couldn't you have been misdiagnosing? couldn't she have been misdiagnosing? couldn't we have been misdiagnosing? couldn't you have been misdiagnosing? couldn't they have been misdiagnosing?