should lapse
Regular verb: lapse - lapsed- lapsed

Affirmation 	
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I'd lapse
you'd lapse
he'd lapse
we'd lapse
you'd lapse
they'd lapse 	I'd be lapsing
you'd be lapsing
he'd be lapsing
we'd be lapsing
you'd be lapsing
they'd be lapsing	I should've lapsed
you should've lapsed
he should've lapsed
we should've lapsed
you should've lapsed
they should've lapsed	I should've been lapsing
you should've been lapsing
he should've been lapsing
we should've been lapsing
you should've been lapsing
they should've been lapsing	

Negation 	
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I shouldn't lapse
you shouldn't lapse
he shouldn't lapse
we shouldn't lapse
you shouldn't lapse
they shouldn't lapse 	I shouldn't be lapsing
you shouldn't be lapsing
he shouldn't be lapsing
we shouldn't be lapsing
you shouldn't be lapsing
they shouldn't be lapsing	I shouldn't have lapsed
you shouldn't have lapsed
he shouldn't have lapsed
we shouldn't have lapsed
you shouldn't have lapsed
they shouldn't have lapsed	I shouldn't have been lapsing
you shouldn't have been lapsing
he shouldn't have been lapsing
we shouldn't have been lapsing
you shouldn't have been lapsing
they shouldn't have been lapsing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I lapse?
should you lapse?
should he lapse?
should we lapse?
should you lapse?
should they lapse? 	should I be lapsing?
should you be lapsing?
should he be lapsing?
should we be lapsing?
should you be lapsing?
should they be lapsing? 	should I have lapsed?
should you have lapsed?
should he have lapsed?
should we have lapsed?
should you have lapsed?
should they have lapsed? 	should I have been lapsing?
should you have been lapsing?
should he have been lapsing?
should we have been lapsing?
should you have been lapsing?
should they have been lapsing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I lapse?
shouldn't you lapse?
shouldn't he lapse?
shouldn't we lapse?
shouldn't you lapse?
shouldn't they lapse? 	shouldn't I be lapsing?
shouldn't you be lapsing?
shouldn't he be lapsing?
shouldn't we be lapsing?
shouldn't you be lapsing?
shouldn't they be lapsing? 	shouldn't I have lapsed?
shouldn't you have lapsed?
shouldn't he have lapsed?
shouldn't we have lapsed?
shouldn't you have lapsed?
shouldn't they have lapsed? 	shouldn't I have been lapsing?
shouldn't you have been lapsing?
shouldn't he have been lapsing?
shouldn't we have been lapsing?
shouldn't you have been lapsing?
shouldn't they have been lapsing?