ought to grin
Regular verb: grin - grinned- grinned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to grin
you ought to grin
he ought to grin
we ought to grin
you ought to grin
they ought to grin 	I ought to be grinning
you ought to be grinning
he ought to be grinning
we ought to be grinning
you ought to be grinning
they ought to be grinning	I ought to have grinned
you ought to have grinned
he ought to have grinned
we ought to have grinned
you ought to have grinned
they ought to have grinned	I ought to have been grinning
you ought to have been grinning
he ought to have been grinning
we ought to have been grinning
you ought to have been grinning
they ought to have been grinning	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I grin?
ought to you grin?
ought to he grin?
ought to we grin?
ought to you grin?
ought to they grin? 	ought to I be grinning?
ought to you be grinning?
ought to he be grinning?
ought to we be grinning?
ought to you be grinning?
ought to they be grinning? 	ought to I have grinned?
ought to you have grinned?
ought to he have grinned?
ought to we have grinned?
ought to you have grinned?
ought to they have grinned? 	ought to I have been grinning?
ought to you have been grinning?
ought to he have been grinning?
ought to we have been grinning?
ought to you have been grinning?
ought to they have been grinning? 	

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