should counter
Regular verb: counter - countered- countered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd counter
you'd counter
she'd counter
we'd counter
you'd counter
they'd counter 	I'd be countering
you'd be countering
she'd be countering
we'd be countering
you'd be countering
they'd be countering	I should've countered
you should've countered
she should've countered
we should've countered
you should've countered
they should've countered	I should've been countering
you should've been countering
she should've been countering
we should've been countering
you should've been countering
they should've been countering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't counter
you shouldn't counter
she shouldn't counter
we shouldn't counter
you shouldn't counter
they shouldn't counter 	I shouldn't be countering
you shouldn't be countering
she shouldn't be countering
we shouldn't be countering
you shouldn't be countering
they shouldn't be countering	I shouldn't have countered
you shouldn't have countered
she shouldn't have countered
we shouldn't have countered
you shouldn't have countered
they shouldn't have countered	I shouldn't have been countering
you shouldn't have been countering
she shouldn't have been countering
we shouldn't have been countering
you shouldn't have been countering
they shouldn't have been countering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I counter?
should you counter?
should she counter?
should we counter?
should you counter?
should they counter? 	should I be countering?
should you be countering?
should she be countering?
should we be countering?
should you be countering?
should they be countering? 	should I have countered?
should you have countered?
should she have countered?
should we have countered?
should you have countered?
should they have countered? 	should I have been countering?
should you have been countering?
should she have been countering?
should we have been countering?
should you have been countering?
should they have been countering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I counter?
shouldn't you counter?
shouldn't she counter?
shouldn't we counter?
shouldn't you counter?
shouldn't they counter? 	shouldn't I be countering?
shouldn't you be countering?
shouldn't she be countering?
shouldn't we be countering?
shouldn't you be countering?
shouldn't they be countering? 	shouldn't I have countered?
shouldn't you have countered?
shouldn't she have countered?
shouldn't we have countered?
shouldn't you have countered?
shouldn't they have countered? 	shouldn't I have been countering?
shouldn't you have been countering?
shouldn't she have been countering?
shouldn't we have been countering?
shouldn't you have been countering?
shouldn't they have been countering?