English verb conjugation
COULD DOSE

Regular verb: dose - dosed - dosed

Affirmation

Simple form	V-ing form
I could dose you could dose he could dose we could dose you could dose they could dose	I could be dosing you could be dosing he could be dosing we could be dosing you could be dosing they could be dosing
Perfect	V-ing perfect
I could have dosed you could have dosed he could have dosed we could have dosed you could have dosed they could have dosed	I could have been dosing you could have been dosing he could have been dosing we could have been dosing you could have been dosing they could have been dosing

Negation

Simple form	V-ing form
I could not dose you could not dose he could not dose we could not dose you could not dose they could not dose	I could not be dosing you could not be dosing he could not be dosing we could not be dosing you could not be dosing they could not be dosing
Perfect	V-ing perfect
I could not have dosed you could not have dosed he could not have dosed we could not have dosed you could not have dosed they could not have dosed	I could not have been dosing you could not have been dosing he could not have been dosing we could not have been dosing you could not have been dosing they could not have been dosing

Interrogative form

Simple form	V-ing form
could I dose? could you dose? could he dose? could we dose? could you dose? could they dose?	could I be dosing? could you be dosing? could he be dosing? could we be dosing? could you be dosing? could they be dosing?
Perfect	V-ing perfect
could I have dosed? could you have dosed? could he have dosed? could we have dosed? could you have dosed? could they have dosed?	could I have been dosing? could you have been dosing? could he have been dosing? could we have been dosing? could you have been dosing? could they have been dosing?

Interro-negative form

Simple form	V-ing form
could I not dose? could you not dose? could he not dose? could we not dose? could you not dose? could they not dose?	could I not be dosing? could you not be dosing? could he not be dosing? could we not be dosing? could you not be dosing? could they not be dosing?
Perfect	V-ing perfect
could I not have dosed? could you not have dosed? could he not have dosed? could we not have dosed? could you not have dosed? could they not have dosed?	could I not have been dosing? could you not have been dosing? could he not have been dosing? could we not have been dosing? could you not have been dosing? could they not have been dosing?