ought to singe
Regular verb: singe - singed- singed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to singe
you ought to singe
he ought to singe
we ought to singe
you ought to singe
they ought to singe 	I ought to be singing
you ought to be singing
he ought to be singing
we ought to be singing
you ought to be singing
they ought to be singing	I ought to have singed
you ought to have singed
he ought to have singed
we ought to have singed
you ought to have singed
they ought to have singed	I ought to have been singing
you ought to have been singing
he ought to have been singing
we ought to have been singing
you ought to have been singing
they ought to have been singing	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I singe?
ought to you singe?
ought to he singe?
ought to we singe?
ought to you singe?
ought to they singe? 	ought to I be singing?
ought to you be singing?
ought to he be singing?
ought to we be singing?
ought to you be singing?
ought to they be singing? 	ought to I have singed?
ought to you have singed?
ought to he have singed?
ought to we have singed?
ought to you have singed?
ought to they have singed? 	ought to I have been singing?
ought to you have been singing?
ought to he have been singing?
ought to we have been singing?
ought to you have been singing?
ought to they have been singing? 	

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