could spawn
Regular verb: spawn - spawned- spawned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could spawn
you could spawn
he could spawn
we could spawn
you could spawn
they could spawn 	I could be spawning
you could be spawning
he could be spawning
we could be spawning
you could be spawning
they could be spawning	I could have spawned
you could have spawned
he could have spawned
we could have spawned
you could have spawned
they could have spawned	I could have been spawning
you could have been spawning
he could have been spawning
we could have been spawning
you could have been spawning
they could have been spawning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't spawn
you couldn't spawn
he couldn't spawn
we couldn't spawn
you couldn't spawn
they couldn't spawn 	I couldn't be spawning
you couldn't be spawning
he couldn't be spawning
we couldn't be spawning
you couldn't be spawning
they couldn't be spawning	I couldn't have spawned
you couldn't have spawned
he couldn't have spawned
we couldn't have spawned
you couldn't have spawned
they couldn't have spawned	I couldn't have been spawning
you couldn't have been spawning
he couldn't have been spawning
we couldn't have been spawning
you couldn't have been spawning
they couldn't have been spawning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I spawn?
could you spawn?
could he spawn?
could we spawn?
could you spawn?
could they spawn? 	could I be spawning?
could you be spawning?
could he be spawning?
could we be spawning?
could you be spawning?
could they be spawning? 	could I have spawned?
could you have spawned?
could he have spawned?
could we have spawned?
could you have spawned?
could they have spawned? 	could I have been spawning?
could you have been spawning?
could he have been spawning?
could we have been spawning?
could you have been spawning?
could they have been spawning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I spawn?
couldn't you spawn?
couldn't he spawn?
couldn't we spawn?
couldn't you spawn?
couldn't they spawn? 	couldn't I be spawning?
couldn't you be spawning?
couldn't he be spawning?
couldn't we be spawning?
couldn't you be spawning?
couldn't they be spawning? 	couldn't I have spawned?
couldn't you have spawned?
couldn't he have spawned?
couldn't we have spawned?
couldn't you have spawned?
couldn't they have spawned? 	couldn't I have been spawning?
couldn't you have been spawning?
couldn't he have been spawning?
couldn't we have been spawning?
couldn't you have been spawning?
couldn't they have been spawning?