Regular verb: start start - start started - start started
Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could start start you could start start he could start start we could start start you could start start they could start start
V-ing form
I could be start starting you could be start starting he could be start starting we could be start starting you could be start starting they could be start starting
Perfect
I could have start started you could have start started he could have start started we could have start started you could have start started they could have start started
V-ing perfect
I could have been start starting you could have been start starting he could have been start starting we could have been start starting you could have been start starting they could have been start starting
Negation
Simple form
I could not start start you could not start start he could not start start we could not start start you could not start start they could not start start
V-ing form
I could not be start starting you could not be start starting he could not be start starting we could not be start starting you could not be start starting they could not be start starting
Perfect
I could not have start started you could not have start started he could not have start started we could not have start started you could not have start started they could not have start started
V-ing perfect
I could not have been start starting you could not have been start starting he could not have been start starting we could not have been start starting you could not have been start starting they could not have been start starting
Interrogative form
Simple form
could I start start? could you start start? could he start start? could we start start? could you start start? could they start start?
V-ing form
could I be start starting? could you be start starting? could he be start starting? could we be start starting? could you be start starting? could they be start starting?
Perfect
could I have start started? could you have start started? could he have start started? could we have start started? could you have start started? could they have start started?
V-ing perfect
could I have been start starting? could you have been start starting? could he have been start starting? could we have been start starting? could you have been start starting? could they have been start starting?
Interro-negative form
Simple form
could I not start start? could you not start start? could he not start start? could we not start start? could you not start start? could they not start start?
V-ing form
could I not be start starting? could you not be start starting? could he not be start starting? could we not be start starting? could you not be start starting? could they not be start starting?
Perfect
could I not have start started? could you not have start started? could he not have start started? could we not have start started? could you not have start started? could they not have start started?
V-ing perfect
could I not have been start starting? could you not have been start starting? could he not have been start starting? could we not have been start starting? could you not have been start starting? could they not have been start starting?