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