ought to overwinter
Regular verb: overwinter - overwintered- overwintered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to overwinter
you ought to overwinter
she ought to overwinter
we ought to overwinter
you ought to overwinter
they ought to overwinter 	I ought to be overwintering
you ought to be overwintering
she ought to be overwintering
we ought to be overwintering
you ought to be overwintering
they ought to be overwintering	I ought to have overwintered
you ought to have overwintered
she ought to have overwintered
we ought to have overwintered
you ought to have overwintered
they ought to have overwintered	I ought to have been overwintering
you ought to have been overwintering
she ought to have been overwintering
we ought to have been overwintering
you ought to have been overwintering
they ought to have been overwintering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to overwinter
you oughtn't to overwinter
she oughtn't to overwinter
we oughtn't to overwinter
you oughtn't to overwinter
they oughtn't to overwinter 	I oughtn't to be overwintering
you oughtn't to be overwintering
she oughtn't to be overwintering
we oughtn't to be overwintering
you oughtn't to be overwintering
they oughtn't to be overwintering	I oughtn't to have overwintered
you oughtn't to have overwintered
she oughtn't to have overwintered
we oughtn't to have overwintered
you oughtn't to have overwintered
they oughtn't to have overwintered	I oughtn't to have been overwintering
you oughtn't to have been overwintering
she oughtn't to have been overwintering
we oughtn't to have been overwintering
you oughtn't to have been overwintering
they oughtn't to have been overwintering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I overwinter?
ought to you overwinter?
ought to she overwinter?
ought to we overwinter?
ought to you overwinter?
ought to they overwinter? 	ought to I be overwintering?
ought to you be overwintering?
ought to she be overwintering?
ought to we be overwintering?
ought to you be overwintering?
ought to they be overwintering? 	ought to I have overwintered?
ought to you have overwintered?
ought to she have overwintered?
ought to we have overwintered?
ought to you have overwintered?
ought to they have overwintered? 	ought to I have been overwintering?
ought to you have been overwintering?
ought to she have been overwintering?
ought to we have been overwintering?
ought to you have been overwintering?
ought to they have been overwintering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to overwinter?
oughtn't you to overwinter?
oughtn't she to overwinter?
oughtn't we to overwinter?
oughtn't you to overwinter?
oughtn't they to overwinter? 	oughtn't I to be overwintering?
oughtn't you to be overwintering?
oughtn't she to be overwintering?
oughtn't we to be overwintering?
oughtn't you to be overwintering?
oughtn't they to be overwintering? 	oughtn't I to have overwintered?
oughtn't you to have overwintered?
oughtn't she to have overwintered?
oughtn't we to have overwintered?
oughtn't you to have overwintered?
oughtn't they to have overwintered? 	oughtn't I to have been overwintering?
oughtn't you to have been overwintering?
oughtn't she to have been overwintering?
oughtn't we to have been overwintering?
oughtn't you to have been overwintering?
oughtn't they to have been overwintering?