English verb conjugation
COULD IGNITE

Regular verb: ignite - ignited - ignited

Affirmation

Simple form	V-ing form
I could ignite you could ignite he could ignite we could ignite you could ignite they could ignite	I could be igniting you could be igniting he could be igniting we could be igniting you could be igniting they could be igniting
Perfect	V-ing perfect
I could have ignited you could have ignited he could have ignited we could have ignited you could have ignited they could have ignited	I could have been igniting you could have been igniting he could have been igniting we could have been igniting you could have been igniting they could have been igniting

Negation

Simple form	V-ing form
I could not ignite you could not ignite he could not ignite we could not ignite you could not ignite they could not ignite	I could not be igniting you could not be igniting he could not be igniting we could not be igniting you could not be igniting they could not be igniting
Perfect	V-ing perfect
I could not have ignited you could not have ignited he could not have ignited we could not have ignited you could not have ignited they could not have ignited	I could not have been igniting you could not have been igniting he could not have been igniting we could not have been igniting you could not have been igniting they could not have been igniting

Interrogative form

Simple form	V-ing form
could I ignite? could you ignite? could he ignite? could we ignite? could you ignite? could they ignite?	could I be igniting? could you be igniting? could he be igniting? could we be igniting? could you be igniting? could they be igniting?
Perfect	V-ing perfect
could I have ignited? could you have ignited? could he have ignited? could we have ignited? could you have ignited? could they have ignited?	could I have been igniting? could you have been igniting? could he have been igniting? could we have been igniting? could you have been igniting? could they have been igniting?

Interro-negative form

Simple form	V-ing form
could I not ignite? could you not ignite? could he not ignite? could we not ignite? could you not ignite? could they not ignite?	could I not be igniting? could you not be igniting? could he not be igniting? could we not be igniting? could you not be igniting? could they not be igniting?
Perfect	V-ing perfect
could I not have ignited? could you not have ignited? could he not have ignited? could we not have ignited? could you not have ignited? could they not have ignited?	could I not have been igniting? could you not have been igniting? could he not have been igniting? could we not have been igniting? could you not have been igniting? could they not have been igniting?