should untwine
Regular verb: untwine - untwined- untwined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd untwine
you'd untwine
she'd untwine
we'd untwine
you'd untwine
they'd untwine 	I'd be untwining
you'd be untwining
she'd be untwining
we'd be untwining
you'd be untwining
they'd be untwining	I should've untwined
you should've untwined
she should've untwined
we should've untwined
you should've untwined
they should've untwined	I should've been untwining
you should've been untwining
she should've been untwining
we should've been untwining
you should've been untwining
they should've been untwining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't untwine
you shouldn't untwine
she shouldn't untwine
we shouldn't untwine
you shouldn't untwine
they shouldn't untwine 	I shouldn't be untwining
you shouldn't be untwining
she shouldn't be untwining
we shouldn't be untwining
you shouldn't be untwining
they shouldn't be untwining	I shouldn't have untwined
you shouldn't have untwined
she shouldn't have untwined
we shouldn't have untwined
you shouldn't have untwined
they shouldn't have untwined	I shouldn't have been untwining
you shouldn't have been untwining
she shouldn't have been untwining
we shouldn't have been untwining
you shouldn't have been untwining
they shouldn't have been untwining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I untwine?
should you untwine?
should she untwine?
should we untwine?
should you untwine?
should they untwine? 	should I be untwining?
should you be untwining?
should she be untwining?
should we be untwining?
should you be untwining?
should they be untwining? 	should I have untwined?
should you have untwined?
should she have untwined?
should we have untwined?
should you have untwined?
should they have untwined? 	should I have been untwining?
should you have been untwining?
should she have been untwining?
should we have been untwining?
should you have been untwining?
should they have been untwining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I untwine?
shouldn't you untwine?
shouldn't she untwine?
shouldn't we untwine?
shouldn't you untwine?
shouldn't they untwine? 	shouldn't I be untwining?
shouldn't you be untwining?
shouldn't she be untwining?
shouldn't we be untwining?
shouldn't you be untwining?
shouldn't they be untwining? 	shouldn't I have untwined?
shouldn't you have untwined?
shouldn't she have untwined?
shouldn't we have untwined?
shouldn't you have untwined?
shouldn't they have untwined? 	shouldn't I have been untwining?
shouldn't you have been untwining?
shouldn't she have been untwining?
shouldn't we have been untwining?
shouldn't you have been untwining?
shouldn't they have been untwining?