should countermine
Regular verb: countermine - countermined- countermined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd countermine
you'd countermine
she'd countermine
we'd countermine
you'd countermine
they'd countermine 	I'd be countermining
you'd be countermining
she'd be countermining
we'd be countermining
you'd be countermining
they'd be countermining	I should've countermined
you should've countermined
she should've countermined
we should've countermined
you should've countermined
they should've countermined	I should've been countermining
you should've been countermining
she should've been countermining
we should've been countermining
you should've been countermining
they should've been countermining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't countermine
you shouldn't countermine
she shouldn't countermine
we shouldn't countermine
you shouldn't countermine
they shouldn't countermine 	I shouldn't be countermining
you shouldn't be countermining
she shouldn't be countermining
we shouldn't be countermining
you shouldn't be countermining
they shouldn't be countermining	I shouldn't have countermined
you shouldn't have countermined
she shouldn't have countermined
we shouldn't have countermined
you shouldn't have countermined
they shouldn't have countermined	I shouldn't have been countermining
you shouldn't have been countermining
she shouldn't have been countermining
we shouldn't have been countermining
you shouldn't have been countermining
they shouldn't have been countermining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I countermine?
should you countermine?
should she countermine?
should we countermine?
should you countermine?
should they countermine? 	should I be countermining?
should you be countermining?
should she be countermining?
should we be countermining?
should you be countermining?
should they be countermining? 	should I have countermined?
should you have countermined?
should she have countermined?
should we have countermined?
should you have countermined?
should they have countermined? 	should I have been countermining?
should you have been countermining?
should she have been countermining?
should we have been countermining?
should you have been countermining?
should they have been countermining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I countermine?
shouldn't you countermine?
shouldn't she countermine?
shouldn't we countermine?
shouldn't you countermine?
shouldn't they countermine? 	shouldn't I be countermining?
shouldn't you be countermining?
shouldn't she be countermining?
shouldn't we be countermining?
shouldn't you be countermining?
shouldn't they be countermining? 	shouldn't I have countermined?
shouldn't you have countermined?
shouldn't she have countermined?
shouldn't we have countermined?
shouldn't you have countermined?
shouldn't they have countermined? 	shouldn't I have been countermining?
shouldn't you have been countermining?
shouldn't she have been countermining?
shouldn't we have been countermining?
shouldn't you have been countermining?
shouldn't they have been countermining?