ought to retrofit
Irregular verb: retrofit - retrofit- retrofit

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to retrofit
you ought to retrofit
he ought to retrofit
we ought to retrofit
you ought to retrofit
they ought to retrofit 	I ought to be retrofiting
you ought to be retrofiting
he ought to be retrofiting
we ought to be retrofiting
you ought to be retrofiting
they ought to be retrofiting	I ought to have retrofit
you ought to have retrofit
he ought to have retrofit
we ought to have retrofit
you ought to have retrofit
they ought to have retrofit	I ought to have been retrofiting
you ought to have been retrofiting
he ought to have been retrofiting
we ought to have been retrofiting
you ought to have been retrofiting
they ought to have been retrofiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to retrofit
you oughtn't to retrofit
he oughtn't to retrofit
we oughtn't to retrofit
you oughtn't to retrofit
they oughtn't to retrofit 	I oughtn't to be retrofiting
you oughtn't to be retrofiting
he oughtn't to be retrofiting
we oughtn't to be retrofiting
you oughtn't to be retrofiting
they oughtn't to be retrofiting	I oughtn't to have retrofit
you oughtn't to have retrofit
he oughtn't to have retrofit
we oughtn't to have retrofit
you oughtn't to have retrofit
they oughtn't to have retrofit	I oughtn't to have been retrofiting
you oughtn't to have been retrofiting
he oughtn't to have been retrofiting
we oughtn't to have been retrofiting
you oughtn't to have been retrofiting
they oughtn't to have been retrofiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I retrofit?
ought to you retrofit?
ought to he retrofit?
ought to we retrofit?
ought to you retrofit?
ought to they retrofit? 	ought to I be retrofiting?
ought to you be retrofiting?
ought to he be retrofiting?
ought to we be retrofiting?
ought to you be retrofiting?
ought to they be retrofiting? 	ought to I have retrofit?
ought to you have retrofit?
ought to he have retrofit?
ought to we have retrofit?
ought to you have retrofit?
ought to they have retrofit? 	ought to I have been retrofiting?
ought to you have been retrofiting?
ought to he have been retrofiting?
ought to we have been retrofiting?
ought to you have been retrofiting?
ought to they have been retrofiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to retrofit?
oughtn't you to retrofit?
oughtn't he to retrofit?
oughtn't we to retrofit?
oughtn't you to retrofit?
oughtn't they to retrofit? 	oughtn't I to be retrofiting?
oughtn't you to be retrofiting?
oughtn't he to be retrofiting?
oughtn't we to be retrofiting?
oughtn't you to be retrofiting?
oughtn't they to be retrofiting? 	oughtn't I to have retrofit?
oughtn't you to have retrofit?
oughtn't he to have retrofit?
oughtn't we to have retrofit?
oughtn't you to have retrofit?
oughtn't they to have retrofit? 	oughtn't I to have been retrofiting?
oughtn't you to have been retrofiting?
oughtn't he to have been retrofiting?
oughtn't we to have been retrofiting?
oughtn't you to have been retrofiting?
oughtn't they to have been retrofiting?