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