I could neglect you could neglect he could neglect we could neglect you could neglect they could neglect
V-ing form
I could be neglecting you could be neglecting he could be neglecting we could be neglecting you could be neglecting they could be neglecting
Perfect
I could have neglected you could have neglected he could have neglected we could have neglected you could have neglected they could have neglected
V-ing perfect
I could have been neglecting you could have been neglecting he could have been neglecting we could have been neglecting you could have been neglecting they could have been neglecting
Negation
Simple form
I couldn't neglect you couldn't neglect he couldn't neglect we couldn't neglect you couldn't neglect they couldn't neglect
V-ing form
I couldn't be neglecting you couldn't be neglecting he couldn't be neglecting we couldn't be neglecting you couldn't be neglecting they couldn't be neglecting
Perfect
I couldn't have neglected you couldn't have neglected he couldn't have neglected we couldn't have neglected you couldn't have neglected they couldn't have neglected
V-ing perfect
I couldn't have been neglecting you couldn't have been neglecting he couldn't have been neglecting we couldn't have been neglecting you couldn't have been neglecting they couldn't have been neglecting
Interrogative form
Simple form
could I neglect? could you neglect? could he neglect? could we neglect? could you neglect? could they neglect?
V-ing form
could I be neglecting? could you be neglecting? could he be neglecting? could we be neglecting? could you be neglecting? could they be neglecting?
Perfect
could I have neglected? could you have neglected? could he have neglected? could we have neglected? could you have neglected? could they have neglected?
V-ing perfect
could I have been neglecting? could you have been neglecting? could he have been neglecting? could we have been neglecting? could you have been neglecting? could they have been neglecting?
Interro-negative form
Simple form
couldn't I neglect? couldn't you neglect? couldn't he neglect? couldn't we neglect? couldn't you neglect? couldn't they neglect?
V-ing form
couldn't I be neglecting? couldn't you be neglecting? couldn't he be neglecting? couldn't we be neglecting? couldn't you be neglecting? couldn't they be neglecting?
Perfect
couldn't I have neglected? couldn't you have neglected? couldn't he have neglected? couldn't we have neglected? couldn't you have neglected? couldn't they have neglected?
V-ing perfect
couldn't I have been neglecting? couldn't you have been neglecting? couldn't he have been neglecting? couldn't we have been neglecting? couldn't you have been neglecting? couldn't they have been neglecting?