could immerse
Regular verb: immerse - immersed- immersed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could immerse
you could immerse
she could immerse
we could immerse
you could immerse
they could immerse 	I could be immersing
you could be immersing
she could be immersing
we could be immersing
you could be immersing
they could be immersing	I could have immersed
you could have immersed
she could have immersed
we could have immersed
you could have immersed
they could have immersed	I could have been immersing
you could have been immersing
she could have been immersing
we could have been immersing
you could have been immersing
they could have been immersing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't immerse
you couldn't immerse
she couldn't immerse
we couldn't immerse
you couldn't immerse
they couldn't immerse 	I couldn't be immersing
you couldn't be immersing
she couldn't be immersing
we couldn't be immersing
you couldn't be immersing
they couldn't be immersing	I couldn't have immersed
you couldn't have immersed
she couldn't have immersed
we couldn't have immersed
you couldn't have immersed
they couldn't have immersed	I couldn't have been immersing
you couldn't have been immersing
she couldn't have been immersing
we couldn't have been immersing
you couldn't have been immersing
they couldn't have been immersing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I immerse?
could you immerse?
could she immerse?
could we immerse?
could you immerse?
could they immerse? 	could I be immersing?
could you be immersing?
could she be immersing?
could we be immersing?
could you be immersing?
could they be immersing? 	could I have immersed?
could you have immersed?
could she have immersed?
could we have immersed?
could you have immersed?
could they have immersed? 	could I have been immersing?
could you have been immersing?
could she have been immersing?
could we have been immersing?
could you have been immersing?
could they have been immersing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I immerse?
couldn't you immerse?
couldn't she immerse?
couldn't we immerse?
couldn't you immerse?
couldn't they immerse? 	couldn't I be immersing?
couldn't you be immersing?
couldn't she be immersing?
couldn't we be immersing?
couldn't you be immersing?
couldn't they be immersing? 	couldn't I have immersed?
couldn't you have immersed?
couldn't she have immersed?
couldn't we have immersed?
couldn't you have immersed?
couldn't they have immersed? 	couldn't I have been immersing?
couldn't you have been immersing?
couldn't she have been immersing?
couldn't we have been immersing?
couldn't you have been immersing?
couldn't they have been immersing?