ought to preclean
Regular verb: preclean - precleaned- precleaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to preclean
you ought to preclean
he ought to preclean
we ought to preclean
you ought to preclean
they ought to preclean 	I ought to be precleaning
you ought to be precleaning
he ought to be precleaning
we ought to be precleaning
you ought to be precleaning
they ought to be precleaning	I ought to have precleaned
you ought to have precleaned
he ought to have precleaned
we ought to have precleaned
you ought to have precleaned
they ought to have precleaned	I ought to have been precleaning
you ought to have been precleaning
he ought to have been precleaning
we ought to have been precleaning
you ought to have been precleaning
they ought to have been precleaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to preclean
you oughtn't to preclean
he oughtn't to preclean
we oughtn't to preclean
you oughtn't to preclean
they oughtn't to preclean 	I oughtn't to be precleaning
you oughtn't to be precleaning
he oughtn't to be precleaning
we oughtn't to be precleaning
you oughtn't to be precleaning
they oughtn't to be precleaning	I oughtn't to have precleaned
you oughtn't to have precleaned
he oughtn't to have precleaned
we oughtn't to have precleaned
you oughtn't to have precleaned
they oughtn't to have precleaned	I oughtn't to have been precleaning
you oughtn't to have been precleaning
he oughtn't to have been precleaning
we oughtn't to have been precleaning
you oughtn't to have been precleaning
they oughtn't to have been precleaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I preclean?
ought to you preclean?
ought to he preclean?
ought to we preclean?
ought to you preclean?
ought to they preclean? 	ought to I be precleaning?
ought to you be precleaning?
ought to he be precleaning?
ought to we be precleaning?
ought to you be precleaning?
ought to they be precleaning? 	ought to I have precleaned?
ought to you have precleaned?
ought to he have precleaned?
ought to we have precleaned?
ought to you have precleaned?
ought to they have precleaned? 	ought to I have been precleaning?
ought to you have been precleaning?
ought to he have been precleaning?
ought to we have been precleaning?
ought to you have been precleaning?
ought to they have been precleaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to preclean?
oughtn't you to preclean?
oughtn't he to preclean?
oughtn't we to preclean?
oughtn't you to preclean?
oughtn't they to preclean? 	oughtn't I to be precleaning?
oughtn't you to be precleaning?
oughtn't he to be precleaning?
oughtn't we to be precleaning?
oughtn't you to be precleaning?
oughtn't they to be precleaning? 	oughtn't I to have precleaned?
oughtn't you to have precleaned?
oughtn't he to have precleaned?
oughtn't we to have precleaned?
oughtn't you to have precleaned?
oughtn't they to have precleaned? 	oughtn't I to have been precleaning?
oughtn't you to have been precleaning?
oughtn't he to have been precleaning?
oughtn't we to have been precleaning?
oughtn't you to have been precleaning?
oughtn't they to have been precleaning?