I could dodder you could dodder she could dodder we could dodder you could dodder they could dodder
V-ing form
I could be doddering you could be doddering she could be doddering we could be doddering you could be doddering they could be doddering
Perfect
I could have doddered you could have doddered she 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 she could have been doddering we could have been doddering you could have been doddering they could have been doddering
Negation
Simple form
I couldn't dodder you couldn't dodder she couldn't dodder we couldn't dodder you couldn't dodder they couldn't dodder
V-ing form
I couldn't be doddering you couldn't be doddering she couldn't be doddering we couldn't be doddering you couldn't be doddering they couldn't be doddering
Perfect
I couldn't have doddered you couldn't have doddered she couldn't have doddered we couldn't have doddered you couldn't have doddered they couldn't have doddered
V-ing perfect
I couldn't have been doddering you couldn't have been doddering she couldn't have been doddering we couldn't have been doddering you couldn't have been doddering they couldn't have been doddering
Interrogative form
Simple form
could I dodder? could you dodder? could she dodder? could we dodder? could you dodder? could they dodder?
V-ing form
could I be doddering? could you be doddering? could she be doddering? could we be doddering? could you be doddering? could they be doddering?
Perfect
could I have doddered? could you have doddered? could she 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 she have been doddering? could we have been doddering? could you have been doddering? could they have been doddering?
Interro-negative form
Simple form
couldn't I dodder? couldn't you dodder? couldn't she dodder? couldn't we dodder? couldn't you dodder? couldn't they dodder?
V-ing form
couldn't I be doddering? couldn't you be doddering? couldn't she be doddering? couldn't we be doddering? couldn't you be doddering? couldn't they be doddering?
Perfect
couldn't I have doddered? couldn't you have doddered? couldn't she have doddered? couldn't we have doddered? couldn't you have doddered? couldn't they have doddered?
V-ing perfect
couldn't I have been doddering? couldn't you have been doddering? couldn't she have been doddering? couldn't we have been doddering? couldn't you have been doddering? couldn't they have been doddering?