ought to succumb
Regular verb: succumb - succumbed- succumbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to succumb
you ought to succumb
she ought to succumb
we ought to succumb
you ought to succumb
they ought to succumb 	I ought to be succumbing
you ought to be succumbing
she ought to be succumbing
we ought to be succumbing
you ought to be succumbing
they ought to be succumbing	I ought to have succumbed
you ought to have succumbed
she ought to have succumbed
we ought to have succumbed
you ought to have succumbed
they ought to have succumbed	I ought to have been succumbing
you ought to have been succumbing
she ought to have been succumbing
we ought to have been succumbing
you ought to have been succumbing
they ought to have been succumbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to succumb
you oughtn't to succumb
she oughtn't to succumb
we oughtn't to succumb
you oughtn't to succumb
they oughtn't to succumb 	I oughtn't to be succumbing
you oughtn't to be succumbing
she oughtn't to be succumbing
we oughtn't to be succumbing
you oughtn't to be succumbing
they oughtn't to be succumbing	I oughtn't to have succumbed
you oughtn't to have succumbed
she oughtn't to have succumbed
we oughtn't to have succumbed
you oughtn't to have succumbed
they oughtn't to have succumbed	I oughtn't to have been succumbing
you oughtn't to have been succumbing
she oughtn't to have been succumbing
we oughtn't to have been succumbing
you oughtn't to have been succumbing
they oughtn't to have been succumbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I succumb?
ought to you succumb?
ought to she succumb?
ought to we succumb?
ought to you succumb?
ought to they succumb? 	ought to I be succumbing?
ought to you be succumbing?
ought to she be succumbing?
ought to we be succumbing?
ought to you be succumbing?
ought to they be succumbing? 	ought to I have succumbed?
ought to you have succumbed?
ought to she have succumbed?
ought to we have succumbed?
ought to you have succumbed?
ought to they have succumbed? 	ought to I have been succumbing?
ought to you have been succumbing?
ought to she have been succumbing?
ought to we have been succumbing?
ought to you have been succumbing?
ought to they have been succumbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to succumb?
oughtn't you to succumb?
oughtn't she to succumb?
oughtn't we to succumb?
oughtn't you to succumb?
oughtn't they to succumb? 	oughtn't I to be succumbing?
oughtn't you to be succumbing?
oughtn't she to be succumbing?
oughtn't we to be succumbing?
oughtn't you to be succumbing?
oughtn't they to be succumbing? 	oughtn't I to have succumbed?
oughtn't you to have succumbed?
oughtn't she to have succumbed?
oughtn't we to have succumbed?
oughtn't you to have succumbed?
oughtn't they to have succumbed? 	oughtn't I to have been succumbing?
oughtn't you to have been succumbing?
oughtn't she to have been succumbing?
oughtn't we to have been succumbing?
oughtn't you to have been succumbing?
oughtn't they to have been succumbing?