I could miss you could miss she could miss we could miss you could miss they could miss
V-ing form
I could be missing you could be missing she could be missing we could be missing you could be missing they could be missing
Perfect
I could have missed you could have missed she could have missed we could have missed you could have missed they could have missed
V-ing perfect
I could have been missing you could have been missing she could have been missing we could have been missing you could have been missing they could have been missing
Negation
Simple form
I could not miss you could not miss she could not miss we could not miss you could not miss they could not miss
V-ing form
I could not be missing you could not be missing she could not be missing we could not be missing you could not be missing they could not be missing
Perfect
I could not have missed you could not have missed she could not have missed we could not have missed you could not have missed they could not have missed
V-ing perfect
I could not have been missing you could not have been missing she could not have been missing we could not have been missing you could not have been missing they could not have been missing
Interrogative form
Simple form
could I miss? could you miss? could she miss? could we miss? could you miss? could they miss?
V-ing form
could I be missing? could you be missing? could she be missing? could we be missing? could you be missing? could they be missing?
Perfect
could I have missed? could you have missed? could she have missed? could we have missed? could you have missed? could they have missed?
V-ing perfect
could I have been missing? could you have been missing? could she have been missing? could we have been missing? could you have been missing? could they have been missing?
Interro-negative form
Simple form
could I not miss? could you not miss? could she not miss? could we not miss? could you not miss? could they not miss?
V-ing form
could I not be missing? could you not be missing? could she not be missing? could we not be missing? could you not be missing? could they not be missing?
Perfect
could I not have missed? could you not have missed? could she not have missed? could we not have missed? could you not have missed? could they not have missed?
V-ing perfect
could I not have been missing? could you not have been missing? could she not have been missing? could we not have been missing? could you not have been missing? could they not have been missing?