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

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