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