English verb conjugation
COULD SKYROCKET

Regular verb: skyrocket - skyrocketed - skyrocketed

Affirmation

Simple form	V-ing form
I could skyrocket you could skyrocket he could skyrocket we could skyrocket you could skyrocket they could skyrocket	I could be skyrocketing you could be skyrocketing he could be skyrocketing we could be skyrocketing you could be skyrocketing they could be skyrocketing
Perfect	V-ing perfect
I could have skyrocketed you could have skyrocketed he could have skyrocketed we could have skyrocketed you could have skyrocketed they could have skyrocketed	I could have been skyrocketing you could have been skyrocketing he could have been skyrocketing we could have been skyrocketing you could have been skyrocketing they could have been skyrocketing

Negation

Simple form	V-ing form
I couldn't skyrocket you couldn't skyrocket he couldn't skyrocket we couldn't skyrocket you couldn't skyrocket they couldn't skyrocket	I couldn't be skyrocketing you couldn't be skyrocketing he couldn't be skyrocketing we couldn't be skyrocketing you couldn't be skyrocketing they couldn't be skyrocketing
Perfect	V-ing perfect
I couldn't have skyrocketed you couldn't have skyrocketed he couldn't have skyrocketed we couldn't have skyrocketed you couldn't have skyrocketed they couldn't have skyrocketed	I couldn't have been skyrocketing you couldn't have been skyrocketing he couldn't have been skyrocketing we couldn't have been skyrocketing you couldn't have been skyrocketing they couldn't have been skyrocketing

Interrogative form

Simple form	V-ing form
could I skyrocket? could you skyrocket? could he skyrocket? could we skyrocket? could you skyrocket? could they skyrocket?	could I be skyrocketing? could you be skyrocketing? could he be skyrocketing? could we be skyrocketing? could you be skyrocketing? could they be skyrocketing?
Perfect	V-ing perfect
could I have skyrocketed? could you have skyrocketed? could he have skyrocketed? could we have skyrocketed? could you have skyrocketed? could they have skyrocketed?	could I have been skyrocketing? could you have been skyrocketing? could he have been skyrocketing? could we have been skyrocketing? could you have been skyrocketing? could they have been skyrocketing?

Interro-negative form

Simple form	V-ing form
couldn't I skyrocket? couldn't you skyrocket? couldn't he skyrocket? couldn't we skyrocket? couldn't you skyrocket? couldn't they skyrocket?	couldn't I be skyrocketing? couldn't you be skyrocketing? couldn't he be skyrocketing? couldn't we be skyrocketing? couldn't you be skyrocketing? couldn't they be skyrocketing?
Perfect	V-ing perfect
couldn't I have skyrocketed? couldn't you have skyrocketed? couldn't he have skyrocketed? couldn't we have skyrocketed? couldn't you have skyrocketed? couldn't they have skyrocketed?	couldn't I have been skyrocketing? couldn't you have been skyrocketing? couldn't he have been skyrocketing? couldn't we have been skyrocketing? couldn't you have been skyrocketing? couldn't they have been skyrocketing?