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