ought to sink
Irregular verb: sink - sank, sunk- sunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sink
you ought to sink
she ought to sink
we ought to sink
you ought to sink
they ought to sink 	I ought to be sinking
you ought to be sinking
she ought to be sinking
we ought to be sinking
you ought to be sinking
they ought to be sinking	I ought to have sunk
you ought to have sunk
she ought to have sunk
we ought to have sunk
you ought to have sunk
they ought to have sunk	I ought to have been sinking
you ought to have been sinking
she ought to have been sinking
we ought to have been sinking
you ought to have been sinking
they ought to have been sinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sink
you oughtn't to sink
she oughtn't to sink
we oughtn't to sink
you oughtn't to sink
they oughtn't to sink 	I oughtn't to be sinking
you oughtn't to be sinking
she oughtn't to be sinking
we oughtn't to be sinking
you oughtn't to be sinking
they oughtn't to be sinking	I oughtn't to have sunk
you oughtn't to have sunk
she oughtn't to have sunk
we oughtn't to have sunk
you oughtn't to have sunk
they oughtn't to have sunk	I oughtn't to have been sinking
you oughtn't to have been sinking
she oughtn't to have been sinking
we oughtn't to have been sinking
you oughtn't to have been sinking
they oughtn't to have been sinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sink?
ought to you sink?
ought to she sink?
ought to we sink?
ought to you sink?
ought to they sink? 	ought to I be sinking?
ought to you be sinking?
ought to she be sinking?
ought to we be sinking?
ought to you be sinking?
ought to they be sinking? 	ought to I have sunk?
ought to you have sunk?
ought to she have sunk?
ought to we have sunk?
ought to you have sunk?
ought to they have sunk? 	ought to I have been sinking?
ought to you have been sinking?
ought to she have been sinking?
ought to we have been sinking?
ought to you have been sinking?
ought to they have been sinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sink?
oughtn't you to sink?
oughtn't she to sink?
oughtn't we to sink?
oughtn't you to sink?
oughtn't they to sink? 	oughtn't I to be sinking?
oughtn't you to be sinking?
oughtn't she to be sinking?
oughtn't we to be sinking?
oughtn't you to be sinking?
oughtn't they to be sinking? 	oughtn't I to have sunk?
oughtn't you to have sunk?
oughtn't she to have sunk?
oughtn't we to have sunk?
oughtn't you to have sunk?
oughtn't they to have sunk? 	oughtn't I to have been sinking?
oughtn't you to have been sinking?
oughtn't she to have been sinking?
oughtn't we to have been sinking?
oughtn't you to have been sinking?
oughtn't they to have been sinking?