I could lipread you could lipread he could lipread we could lipread you could lipread they could lipread
V-ing form
I could be lipreading you could be lipreading he could be lipreading we could be lipreading you could be lipreading they could be lipreading
Perfect
I could have lipread you could have lipread he could have lipread we could have lipread you could have lipread they could have lipread
V-ing perfect
I could have been lipreading you could have been lipreading he could have been lipreading we could have been lipreading you could have been lipreading they could have been lipreading
Negation
Simple form
I could not lipread you could not lipread he could not lipread we could not lipread you could not lipread they could not lipread
V-ing form
I could not be lipreading you could not be lipreading he could not be lipreading we could not be lipreading you could not be lipreading they could not be lipreading
Perfect
I could not have lipread you could not have lipread he could not have lipread we could not have lipread you could not have lipread they could not have lipread
V-ing perfect
I could not have been lipreading you could not have been lipreading he could not have been lipreading we could not have been lipreading you could not have been lipreading they could not have been lipreading
Interrogative form
Simple form
could I lipread? could you lipread? could he lipread? could we lipread? could you lipread? could they lipread?
V-ing form
could I be lipreading? could you be lipreading? could he be lipreading? could we be lipreading? could you be lipreading? could they be lipreading?
Perfect
could I have lipread? could you have lipread? could he have lipread? could we have lipread? could you have lipread? could they have lipread?
V-ing perfect
could I have been lipreading? could you have been lipreading? could he have been lipreading? could we have been lipreading? could you have been lipreading? could they have been lipreading?
Interro-negative form
Simple form
could I not lipread? could you not lipread? could he not lipread? could we not lipread? could you not lipread? could they not lipread?
V-ing form
could I not be lipreading? could you not be lipreading? could he not be lipreading? could we not be lipreading? could you not be lipreading? could they not be lipreading?
Perfect
could I not have lipread? could you not have lipread? could he not have lipread? could we not have lipread? could you not have lipread? could they not have lipread?
V-ing perfect
could I not have been lipreading? could you not have been lipreading? could he not have been lipreading? could we not have been lipreading? could you not have been lipreading? could they not have been lipreading?