English verb conjugation
COULD ROCKET

Regular verb: rocket - rocketed - rocketed

Affirmation

Simple form	V-ing form
I could rocket you could rocket he could rocket we could rocket you could rocket they could rocket	I could be rocketing you could be rocketing he could be rocketing we could be rocketing you could be rocketing they could be rocketing
Perfect	V-ing perfect
I could have rocketed you could have rocketed he could have rocketed we could have rocketed you could have rocketed they could have rocketed	I could have been rocketing you could have been rocketing he could have been rocketing we could have been rocketing you could have been rocketing they could have been rocketing

Negation

Simple form	V-ing form
I couldn't rocket you couldn't rocket he couldn't rocket we couldn't rocket you couldn't rocket they couldn't rocket	I couldn't be rocketing you couldn't be rocketing he couldn't be rocketing we couldn't be rocketing you couldn't be rocketing they couldn't be rocketing
Perfect	V-ing perfect
I couldn't have rocketed you couldn't have rocketed he couldn't have rocketed we couldn't have rocketed you couldn't have rocketed they couldn't have rocketed	I couldn't have been rocketing you couldn't have been rocketing he couldn't have been rocketing we couldn't have been rocketing you couldn't have been rocketing they couldn't have been rocketing

Interrogative form

Simple form	V-ing form
could I rocket? could you rocket? could he rocket? could we rocket? could you rocket? could they rocket?	could I be rocketing? could you be rocketing? could he be rocketing? could we be rocketing? could you be rocketing? could they be rocketing?
Perfect	V-ing perfect
could I have rocketed? could you have rocketed? could he have rocketed? could we have rocketed? could you have rocketed? could they have rocketed?	could I have been rocketing? could you have been rocketing? could he have been rocketing? could we have been rocketing? could you have been rocketing? could they have been rocketing?

Interro-negative form

Simple form	V-ing form
couldn't I rocket? couldn't you rocket? couldn't he rocket? couldn't we rocket? couldn't you rocket? couldn't they rocket?	couldn't I be rocketing? couldn't you be rocketing? couldn't he be rocketing? couldn't we be rocketing? couldn't you be rocketing? couldn't they be rocketing?
Perfect	V-ing perfect
couldn't I have rocketed? couldn't you have rocketed? couldn't he have rocketed? couldn't we have rocketed? couldn't you have rocketed? couldn't they have rocketed?	couldn't I have been rocketing? couldn't you have been rocketing? couldn't he have been rocketing? couldn't we have been rocketing? couldn't you have been rocketing? couldn't they have been rocketing?