I could dodder you could dodder he could dodder we could dodder you could dodder they could dodder
V-ing form
I could be doddering you could be doddering he could be doddering we could be doddering you could be doddering they could be doddering
Perfect
I could have doddered you could have doddered he could have doddered we could have doddered you could have doddered they could have doddered
V-ing perfect
I could have been doddering you could have been doddering he could have been doddering we could have been doddering you could have been doddering they could have been doddering
Negation
Simple form
I could not dodder you could not dodder he could not dodder we could not dodder you could not dodder they could not dodder
V-ing form
I could not be doddering you could not be doddering he could not be doddering we could not be doddering you could not be doddering they could not be doddering
Perfect
I could not have doddered you could not have doddered he could not have doddered we could not have doddered you could not have doddered they could not have doddered
V-ing perfect
I could not have been doddering you could not have been doddering he could not have been doddering we could not have been doddering you could not have been doddering they could not have been doddering
Interrogative form
Simple form
could I dodder? could you dodder? could he dodder? could we dodder? could you dodder? could they dodder?
V-ing form
could I be doddering? could you be doddering? could he be doddering? could we be doddering? could you be doddering? could they be doddering?
Perfect
could I have doddered? could you have doddered? could he have doddered? could we have doddered? could you have doddered? could they have doddered?
V-ing perfect
could I have been doddering? could you have been doddering? could he have been doddering? could we have been doddering? could you have been doddering? could they have been doddering?
Interro-negative form
Simple form
could I not dodder? could you not dodder? could he not dodder? could we not dodder? could you not dodder? could they not dodder?
V-ing form
could I not be doddering? could you not be doddering? could he not be doddering? could we not be doddering? could you not be doddering? could they not be doddering?
Perfect
could I not have doddered? could you not have doddered? could he not have doddered? could we not have doddered? could you not have doddered? could they not have doddered?
V-ing perfect
could I not have been doddering? could you not have been doddering? could he not have been doddering? could we not have been doddering? could you not have been doddering? could they not have been doddering?