ought to stab
Regular verb: stab - stabbed- stabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to stab
you ought to stab
she ought to stab
we ought to stab
you ought to stab
they ought to stab 	I ought to be stabbing
you ought to be stabbing
she ought to be stabbing
we ought to be stabbing
you ought to be stabbing
they ought to be stabbing	I ought to have stabbed
you ought to have stabbed
she ought to have stabbed
we ought to have stabbed
you ought to have stabbed
they ought to have stabbed	I ought to have been stabbing
you ought to have been stabbing
she ought to have been stabbing
we ought to have been stabbing
you ought to have been stabbing
they ought to have been stabbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to stab
you ought not to stab
she ought not to stab
we ought not to stab
you ought not to stab
they ought not to stab 	I ought not to stabbing
you ought not to stabbing
she ought not to stabbing
we ought not to stabbing
you ought not to stabbing
they ought not to stabbing	I ought not to have stabbed
you ought not to have stabbed
she ought not to have stabbed
we ought not to have stabbed
you ought not to have stabbed
they ought not to have stabbed	I ought not to have been stabbing
you ought not to have been stabbing
she ought not to have been stabbing
we ought not to have been stabbing
you ought not to have been stabbing
they ought not to have been stabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I stab?
ought to you stab?
ought to she stab?
ought to we stab?
ought to you stab?
ought to they stab? 	ought to I be stabbing?
ought to you be stabbing?
ought to she be stabbing?
ought to we be stabbing?
ought to you be stabbing?
ought to they be stabbing? 	ought to I have stabbed?
ought to you have stabbed?
ought to she have stabbed?
ought to we have stabbed?
ought to you have stabbed?
ought to they have stabbed? 	ought to I have been stabbing?
ought to you have been stabbing?
ought to she have been stabbing?
ought to we have been stabbing?
ought to you have been stabbing?
ought to they have been stabbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to stab?
ought you not to stab?
ought she not to stab?
ought we not to stab?
ought you not to stab?
ought they not to stab? 	ought I not to be stabbing?
ought you not to be stabbing?
ought she not to be stabbing?
ought we not to be stabbing?
ought you not to be stabbing?
ought they not to be stabbing? 	ought I not to have stabbed?
ought you not to have stabbed?
ought she not to have stabbed?
ought we not to have stabbed?
ought you not to have stabbed?
ought they not to have stabbed? 	ought I not to have been stabbing?
ought you not to have been stabbing?
ought she not to have been stabbing?
ought we not to have been stabbing?
ought you not to have been stabbing?
ought they not to have been stabbing?