ought to last
Regular verb: last - lasted- lasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to last
you ought to last
she ought to last
we ought to last
you ought to last
they ought to last 	I ought to be lasting
you ought to be lasting
she ought to be lasting
we ought to be lasting
you ought to be lasting
they ought to be lasting	I ought to have lasted
you ought to have lasted
she ought to have lasted
we ought to have lasted
you ought to have lasted
they ought to have lasted	I ought to have been lasting
you ought to have been lasting
she ought to have been lasting
we ought to have been lasting
you ought to have been lasting
they ought to have been lasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to last
you oughtn't to last
she oughtn't to last
we oughtn't to last
you oughtn't to last
they oughtn't to last 	I oughtn't to be lasting
you oughtn't to be lasting
she oughtn't to be lasting
we oughtn't to be lasting
you oughtn't to be lasting
they oughtn't to be lasting	I oughtn't to have lasted
you oughtn't to have lasted
she oughtn't to have lasted
we oughtn't to have lasted
you oughtn't to have lasted
they oughtn't to have lasted	I oughtn't to have been lasting
you oughtn't to have been lasting
she oughtn't to have been lasting
we oughtn't to have been lasting
you oughtn't to have been lasting
they oughtn't to have been lasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I last?
ought to you last?
ought to she last?
ought to we last?
ought to you last?
ought to they last? 	ought to I be lasting?
ought to you be lasting?
ought to she be lasting?
ought to we be lasting?
ought to you be lasting?
ought to they be lasting? 	ought to I have lasted?
ought to you have lasted?
ought to she have lasted?
ought to we have lasted?
ought to you have lasted?
ought to they have lasted? 	ought to I have been lasting?
ought to you have been lasting?
ought to she have been lasting?
ought to we have been lasting?
ought to you have been lasting?
ought to they have been lasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to last?
oughtn't you to last?
oughtn't she to last?
oughtn't we to last?
oughtn't you to last?
oughtn't they to last? 	oughtn't I to be lasting?
oughtn't you to be lasting?
oughtn't she to be lasting?
oughtn't we to be lasting?
oughtn't you to be lasting?
oughtn't they to be lasting? 	oughtn't I to have lasted?
oughtn't you to have lasted?
oughtn't she to have lasted?
oughtn't we to have lasted?
oughtn't you to have lasted?
oughtn't they to have lasted? 	oughtn't I to have been lasting?
oughtn't you to have been lasting?
oughtn't she to have been lasting?
oughtn't we to have been lasting?
oughtn't you to have been lasting?
oughtn't they to have been lasting?