ought to prework
Regular verb: prework - preworked- preworked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prework
you ought to prework
he ought to prework
we ought to prework
you ought to prework
they ought to prework 	I ought to be preworking
you ought to be preworking
he ought to be preworking
we ought to be preworking
you ought to be preworking
they ought to be preworking	I ought to have preworked
you ought to have preworked
he ought to have preworked
we ought to have preworked
you ought to have preworked
they ought to have preworked	I ought to have been preworking
you ought to have been preworking
he ought to have been preworking
we ought to have been preworking
you ought to have been preworking
they ought to have been preworking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to prework
you ought not to prework
he ought not to prework
we ought not to prework
you ought not to prework
they ought not to prework 	I ought not to preworking
you ought not to preworking
he ought not to preworking
we ought not to preworking
you ought not to preworking
they ought not to preworking	I ought not to have preworked
you ought not to have preworked
he ought not to have preworked
we ought not to have preworked
you ought not to have preworked
they ought not to have preworked	I ought not to have been preworking
you ought not to have been preworking
he ought not to have been preworking
we ought not to have been preworking
you ought not to have been preworking
they ought not to have been preworking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I prework?
ought to you prework?
ought to he prework?
ought to we prework?
ought to you prework?
ought to they prework? 	ought to I be preworking?
ought to you be preworking?
ought to he be preworking?
ought to we be preworking?
ought to you be preworking?
ought to they be preworking? 	ought to I have preworked?
ought to you have preworked?
ought to he have preworked?
ought to we have preworked?
ought to you have preworked?
ought to they have preworked? 	ought to I have been preworking?
ought to you have been preworking?
ought to he have been preworking?
ought to we have been preworking?
ought to you have been preworking?
ought to they have been preworking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to prework?
ought you not to prework?
ought he not to prework?
ought we not to prework?
ought you not to prework?
ought they not to prework? 	ought I not to be preworking?
ought you not to be preworking?
ought he not to be preworking?
ought we not to be preworking?
ought you not to be preworking?
ought they not to be preworking? 	ought I not to have preworked?
ought you not to have preworked?
ought he not to have preworked?
ought we not to have preworked?
ought you not to have preworked?
ought they not to have preworked? 	ought I not to have been preworking?
ought you not to have been preworking?
ought he not to have been preworking?
ought we not to have been preworking?
ought you not to have been preworking?
ought they not to have been preworking?