should harness
Regular verb: harness - harnessed- harnessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd harness
you'd harness
he'd harness
we'd harness
you'd harness
they'd harness 	I'd be harnessing
you'd be harnessing
he'd be harnessing
we'd be harnessing
you'd be harnessing
they'd be harnessing	I should've harnessed
you should've harnessed
he should've harnessed
we should've harnessed
you should've harnessed
they should've harnessed	I should've been harnessing
you should've been harnessing
he should've been harnessing
we should've been harnessing
you should've been harnessing
they should've been harnessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't harness
you shouldn't harness
he shouldn't harness
we shouldn't harness
you shouldn't harness
they shouldn't harness 	I shouldn't be harnessing
you shouldn't be harnessing
he shouldn't be harnessing
we shouldn't be harnessing
you shouldn't be harnessing
they shouldn't be harnessing	I shouldn't have harnessed
you shouldn't have harnessed
he shouldn't have harnessed
we shouldn't have harnessed
you shouldn't have harnessed
they shouldn't have harnessed	I shouldn't have been harnessing
you shouldn't have been harnessing
he shouldn't have been harnessing
we shouldn't have been harnessing
you shouldn't have been harnessing
they shouldn't have been harnessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I harness?
should you harness?
should he harness?
should we harness?
should you harness?
should they harness? 	should I be harnessing?
should you be harnessing?
should he be harnessing?
should we be harnessing?
should you be harnessing?
should they be harnessing? 	should I have harnessed?
should you have harnessed?
should he have harnessed?
should we have harnessed?
should you have harnessed?
should they have harnessed? 	should I have been harnessing?
should you have been harnessing?
should he have been harnessing?
should we have been harnessing?
should you have been harnessing?
should they have been harnessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I harness?
shouldn't you harness?
shouldn't he harness?
shouldn't we harness?
shouldn't you harness?
shouldn't they harness? 	shouldn't I be harnessing?
shouldn't you be harnessing?
shouldn't he be harnessing?
shouldn't we be harnessing?
shouldn't you be harnessing?
shouldn't they be harnessing? 	shouldn't I have harnessed?
shouldn't you have harnessed?
shouldn't he have harnessed?
shouldn't we have harnessed?
shouldn't you have harnessed?
shouldn't they have harnessed? 	shouldn't I have been harnessing?
shouldn't you have been harnessing?
shouldn't he have been harnessing?
shouldn't we have been harnessing?
shouldn't you have been harnessing?
shouldn't they have been harnessing?