English verb conjugation
COULD MOTORCYCLE

Regular verb: motorcycle - motorcycled - motorcycled

Affirmation

Simple form	V-ing form
I could motorcycle you could motorcycle she could motorcycle we could motorcycle you could motorcycle they could motorcycle	I could be motorcycling you could be motorcycling she could be motorcycling we could be motorcycling you could be motorcycling they could be motorcycling
Perfect	V-ing perfect
I could have motorcycled you could have motorcycled she could have motorcycled we could have motorcycled you could have motorcycled they could have motorcycled	I could have been motorcycling you could have been motorcycling she could have been motorcycling we could have been motorcycling you could have been motorcycling they could have been motorcycling

Negation

Simple form	V-ing form
I could not motorcycle you could not motorcycle she could not motorcycle we could not motorcycle you could not motorcycle they could not motorcycle	I could not be motorcycling you could not be motorcycling she could not be motorcycling we could not be motorcycling you could not be motorcycling they could not be motorcycling
Perfect	V-ing perfect
I could not have motorcycled you could not have motorcycled she could not have motorcycled we could not have motorcycled you could not have motorcycled they could not have motorcycled	I could not have been motorcycling you could not have been motorcycling she could not have been motorcycling we could not have been motorcycling you could not have been motorcycling they could not have been motorcycling

Interrogative form

Simple form	V-ing form
could I motorcycle? could you motorcycle? could she motorcycle? could we motorcycle? could you motorcycle? could they motorcycle?	could I be motorcycling? could you be motorcycling? could she be motorcycling? could we be motorcycling? could you be motorcycling? could they be motorcycling?
Perfect	V-ing perfect
could I have motorcycled? could you have motorcycled? could she have motorcycled? could we have motorcycled? could you have motorcycled? could they have motorcycled?	could I have been motorcycling? could you have been motorcycling? could she have been motorcycling? could we have been motorcycling? could you have been motorcycling? could they have been motorcycling?

Interro-negative form

Simple form	V-ing form
could I not motorcycle? could you not motorcycle? could she not motorcycle? could we not motorcycle? could you not motorcycle? could they not motorcycle?	could I not be motorcycling? could you not be motorcycling? could she not be motorcycling? could we not be motorcycling? could you not be motorcycling? could they not be motorcycling?
Perfect	V-ing perfect
could I not have motorcycled? could you not have motorcycled? could she not have motorcycled? could we not have motorcycled? could you not have motorcycled? could they not have motorcycled?	could I not have been motorcycling? could you not have been motorcycling? could she not have been motorcycling? could we not have been motorcycling? could you not have been motorcycling? could they not have been motorcycling?