could seethe
Regular verb: seethe - seethed- seethed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could seethe
you could seethe
he could seethe
we could seethe
you could seethe
they could seethe 	I could be seething
you could be seething
he could be seething
we could be seething
you could be seething
they could be seething	I could have seethed
you could have seethed
he could have seethed
we could have seethed
you could have seethed
they could have seethed	I could have been seething
you could have been seething
he could have been seething
we could have been seething
you could have been seething
they could have been seething	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not seethe
you could not seethe
he could not seethe
we could not seethe
you could not seethe
they could not seethe 	I could not be seething
you could not be seething
he could not be seething
we could not be seething
you could not be seething
they could not be seething	I could not have seethed
you could not have seethed
he could not have seethed
we could not have seethed
you could not have seethed
they could not have seethed	I could not have been seething
you could not have been seething
he could not have been seething
we could not have been seething
you could not have been seething
they could not have been seething	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I seethe?
could you seethe?
could he seethe?
could we seethe?
could you seethe?
could they seethe? 	could I be seething?
could you be seething?
could he be seething?
could we be seething?
could you be seething?
could they be seething? 	could I have seethed?
could you have seethed?
could he have seethed?
could we have seethed?
could you have seethed?
could they have seethed? 	could I have been seething?
could you have been seething?
could he have been seething?
could we have been seething?
could you have been seething?
could they have been seething? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not seethe?
could you not seethe?
could he not seethe?
could we not seethe?
could you not seethe?
could they not seethe? 	could I not be seething?
could you not be seething?
could he not be seething?
could we not be seething?
could you not be seething?
could they not be seething? 	could I not have seethed?
could you not have seethed?
could he not have seethed?
could we not have seethed?
could you not have seethed?
could they not have seethed? 	could I not have been seething?
could you not have been seething?
could he not have been seething?
could we not have been seething?
could you not have been seething?
could they not have been seething?