ought to witness
Verbo regular: witness - witnessed- witnessed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to witness
you ought to witness
she ought to witness
we ought to witness
you ought to witness
they ought to witness 	I ought to be witnessing
you ought to be witnessing
she ought to be witnessing
we ought to be witnessing
you ought to be witnessing
they ought to be witnessing	I ought to have witnessed
you ought to have witnessed
she ought to have witnessed
we ought to have witnessed
you ought to have witnessed
they ought to have witnessed	I ought to have been witnessing
you ought to have been witnessing
she ought to have been witnessing
we ought to have been witnessing
you ought to have been witnessing
they ought to have been witnessing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to witness
you ought not to witness
she ought not to witness
we ought not to witness
you ought not to witness
they ought not to witness 	I ought not to witnessing
you ought not to witnessing
she ought not to witnessing
we ought not to witnessing
you ought not to witnessing
they ought not to witnessing	I ought not to have witnessed
you ought not to have witnessed
she ought not to have witnessed
we ought not to have witnessed
you ought not to have witnessed
they ought not to have witnessed	I ought not to have been witnessing
you ought not to have been witnessing
she ought not to have been witnessing
we ought not to have been witnessing
you ought not to have been witnessing
they ought not to have been witnessing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I witness?
ought to you witness?
ought to she witness?
ought to we witness?
ought to you witness?
ought to they witness? 	ought to I be witnessing?
ought to you be witnessing?
ought to she be witnessing?
ought to we be witnessing?
ought to you be witnessing?
ought to they be witnessing? 	ought to I have witnessed?
ought to you have witnessed?
ought to she have witnessed?
ought to we have witnessed?
ought to you have witnessed?
ought to they have witnessed? 	ought to I have been witnessing?
ought to you have been witnessing?
ought to she have been witnessing?
ought to we have been witnessing?
ought to you have been witnessing?
ought to they have been witnessing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to witness?
ought you not to witness?
ought she not to witness?
ought we not to witness?
ought you not to witness?
ought they not to witness? 	ought I not to be witnessing?
ought you not to be witnessing?
ought she not to be witnessing?
ought we not to be witnessing?
ought you not to be witnessing?
ought they not to be witnessing? 	ought I not to have witnessed?
ought you not to have witnessed?
ought she not to have witnessed?
ought we not to have witnessed?
ought you not to have witnessed?
ought they not to have witnessed? 	ought I not to have been witnessing?
ought you not to have been witnessing?
ought she not to have been witnessing?
ought we not to have been witnessing?
ought you not to have been witnessing?
ought they not to have been witnessing?