English verb conjugation
COULD MOTORCYCLE

Regular verb: motorcycle - motorcycled - motorcycled

Affirmation

Simple form	V-ing form
I could motorcycle you could motorcycle he could motorcycle we could motorcycle you could motorcycle they could motorcycle	I could be motorcycling you could be motorcycling he 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 he 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 he 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 couldn't motorcycle you couldn't motorcycle he couldn't motorcycle we couldn't motorcycle you couldn't motorcycle they couldn't motorcycle	I couldn't be motorcycling you couldn't be motorcycling he couldn't be motorcycling we couldn't be motorcycling you couldn't be motorcycling they couldn't be motorcycling
Perfect	V-ing perfect
I couldn't have motorcycled you couldn't have motorcycled he couldn't have motorcycled we couldn't have motorcycled you couldn't have motorcycled they couldn't have motorcycled	I couldn't have been motorcycling you couldn't have been motorcycling he couldn't have been motorcycling we couldn't have been motorcycling you couldn't have been motorcycling they couldn't have been motorcycling

Interrogative form

Simple form	V-ing form
could I motorcycle? could you motorcycle? could he motorcycle? could we motorcycle? could you motorcycle? could they motorcycle?	could I be motorcycling? could you be motorcycling? could he 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 he 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 he 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
couldn't I motorcycle? couldn't you motorcycle? couldn't he motorcycle? couldn't we motorcycle? couldn't you motorcycle? couldn't they motorcycle?	couldn't I be motorcycling? couldn't you be motorcycling? couldn't he be motorcycling? couldn't we be motorcycling? couldn't you be motorcycling? couldn't they be motorcycling?
Perfect	V-ing perfect
couldn't I have motorcycled? couldn't you have motorcycled? couldn't he have motorcycled? couldn't we have motorcycled? couldn't you have motorcycled? couldn't they have motorcycled?	couldn't I have been motorcycling? couldn't you have been motorcycling? couldn't he have been motorcycling? couldn't we have been motorcycling? couldn't you have been motorcycling? couldn't they have been motorcycling?