ought to pipe
Regular verb: pipe - piped- piped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to pipe
you ought to pipe
she ought to pipe
we ought to pipe
you ought to pipe
they ought to pipe 	I ought to be piping
you ought to be piping
she ought to be piping
we ought to be piping
you ought to be piping
they ought to be piping	I ought to have piped
you ought to have piped
she ought to have piped
we ought to have piped
you ought to have piped
they ought to have piped	I ought to have been piping
you ought to have been piping
she ought to have been piping
we ought to have been piping
you ought to have been piping
they ought to have been piping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to pipe
you oughtn't to pipe
she oughtn't to pipe
we oughtn't to pipe
you oughtn't to pipe
they oughtn't to pipe 	I oughtn't to be piping
you oughtn't to be piping
she oughtn't to be piping
we oughtn't to be piping
you oughtn't to be piping
they oughtn't to be piping	I oughtn't to have piped
you oughtn't to have piped
she oughtn't to have piped
we oughtn't to have piped
you oughtn't to have piped
they oughtn't to have piped	I oughtn't to have been piping
you oughtn't to have been piping
she oughtn't to have been piping
we oughtn't to have been piping
you oughtn't to have been piping
they oughtn't to have been piping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I pipe?
ought to you pipe?
ought to she pipe?
ought to we pipe?
ought to you pipe?
ought to they pipe? 	ought to I be piping?
ought to you be piping?
ought to she be piping?
ought to we be piping?
ought to you be piping?
ought to they be piping? 	ought to I have piped?
ought to you have piped?
ought to she have piped?
ought to we have piped?
ought to you have piped?
ought to they have piped? 	ought to I have been piping?
ought to you have been piping?
ought to she have been piping?
ought to we have been piping?
ought to you have been piping?
ought to they have been piping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to pipe?
oughtn't you to pipe?
oughtn't she to pipe?
oughtn't we to pipe?
oughtn't you to pipe?
oughtn't they to pipe? 	oughtn't I to be piping?
oughtn't you to be piping?
oughtn't she to be piping?
oughtn't we to be piping?
oughtn't you to be piping?
oughtn't they to be piping? 	oughtn't I to have piped?
oughtn't you to have piped?
oughtn't she to have piped?
oughtn't we to have piped?
oughtn't you to have piped?
oughtn't they to have piped? 	oughtn't I to have been piping?
oughtn't you to have been piping?
oughtn't she to have been piping?
oughtn't we to have been piping?
oughtn't you to have been piping?
oughtn't they to have been piping?