should discover
Regular verb: discover - discovered- discovered

Affirmation 	
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I'd discover
you'd discover
she'd discover
we'd discover
you'd discover
they'd discover 	I'd be discovering
you'd be discovering
she'd be discovering
we'd be discovering
you'd be discovering
they'd be discovering	I should've discovered
you should've discovered
she should've discovered
we should've discovered
you should've discovered
they should've discovered	I should've been discovering
you should've been discovering
she should've been discovering
we should've been discovering
you should've been discovering
they should've been discovering	

Negation 	
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I shouldn't discover
you shouldn't discover
she shouldn't discover
we shouldn't discover
you shouldn't discover
they shouldn't discover 	I shouldn't be discovering
you shouldn't be discovering
she shouldn't be discovering
we shouldn't be discovering
you shouldn't be discovering
they shouldn't be discovering	I shouldn't have discovered
you shouldn't have discovered
she shouldn't have discovered
we shouldn't have discovered
you shouldn't have discovered
they shouldn't have discovered	I shouldn't have been discovering
you shouldn't have been discovering
she shouldn't have been discovering
we shouldn't have been discovering
you shouldn't have been discovering
they shouldn't have been discovering	

Interrogative form 	
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should I discover?
should you discover?
should she discover?
should we discover?
should you discover?
should they discover? 	should I be discovering?
should you be discovering?
should she be discovering?
should we be discovering?
should you be discovering?
should they be discovering? 	should I have discovered?
should you have discovered?
should she have discovered?
should we have discovered?
should you have discovered?
should they have discovered? 	should I have been discovering?
should you have been discovering?
should she have been discovering?
should we have been discovering?
should you have been discovering?
should they have been discovering? 	

Interro-negative form 	
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shouldn't I discover?
shouldn't you discover?
shouldn't she discover?
shouldn't we discover?
shouldn't you discover?
shouldn't they discover? 	shouldn't I be discovering?
shouldn't you be discovering?
shouldn't she be discovering?
shouldn't we be discovering?
shouldn't you be discovering?
shouldn't they be discovering? 	shouldn't I have discovered?
shouldn't you have discovered?
shouldn't she have discovered?
shouldn't we have discovered?
shouldn't you have discovered?
shouldn't they have discovered? 	shouldn't I have been discovering?
shouldn't you have been discovering?
shouldn't she have been discovering?
shouldn't we have been discovering?
shouldn't you have been discovering?
shouldn't they have been discovering?