English verb conjugation
COULD SELF-IGNITE

Regular verb: self-ignite - self-ignited - self-ignited

Affirmation

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

Negation

Simple form	V-ing form
I couldn't self-ignite you couldn't self-ignite she couldn't self-ignite we couldn't self-ignite you couldn't self-ignite they couldn't self-ignite	I couldn't be self-igniting you couldn't be self-igniting she couldn't be self-igniting we couldn't be self-igniting you couldn't be self-igniting they couldn't be self-igniting
Perfect	V-ing perfect
I couldn't have self-ignited you couldn't have self-ignited she couldn't have self-ignited we couldn't have self-ignited you couldn't have self-ignited they couldn't have self-ignited	I couldn't have been self-igniting you couldn't have been self-igniting she couldn't have been self-igniting we couldn't have been self-igniting you couldn't have been self-igniting they couldn't have been self-igniting

Interrogative form

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

Interro-negative form

Simple form	V-ing form
couldn't I self-ignite? couldn't you self-ignite? couldn't she self-ignite? couldn't we self-ignite? couldn't you self-ignite? couldn't they self-ignite?	couldn't I be self-igniting? couldn't you be self-igniting? couldn't she be self-igniting? couldn't we be self-igniting? couldn't you be self-igniting? couldn't they be self-igniting?
Perfect	V-ing perfect
couldn't I have self-ignited? couldn't you have self-ignited? couldn't she have self-ignited? couldn't we have self-ignited? couldn't you have self-ignited? couldn't they have self-ignited?	couldn't I have been self-igniting? couldn't you have been self-igniting? couldn't she have been self-igniting? couldn't we have been self-igniting? couldn't you have been self-igniting? couldn't they have been self-igniting?