ought to demist
Regular verb: demist - demisted- demisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to demist
you ought to demist
he ought to demist
we ought to demist
you ought to demist
they ought to demist 	I ought to be demisting
you ought to be demisting
he ought to be demisting
we ought to be demisting
you ought to be demisting
they ought to be demisting	I ought to have demisted
you ought to have demisted
he ought to have demisted
we ought to have demisted
you ought to have demisted
they ought to have demisted	I ought to have been demisting
you ought to have been demisting
he ought to have been demisting
we ought to have been demisting
you ought to have been demisting
they ought to have been demisting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to demist
you ought not to demist
he ought not to demist
we ought not to demist
you ought not to demist
they ought not to demist 	I ought not to demisting
you ought not to demisting
he ought not to demisting
we ought not to demisting
you ought not to demisting
they ought not to demisting	I ought not to have demisted
you ought not to have demisted
he ought not to have demisted
we ought not to have demisted
you ought not to have demisted
they ought not to have demisted	I ought not to have been demisting
you ought not to have been demisting
he ought not to have been demisting
we ought not to have been demisting
you ought not to have been demisting
they ought not to have been demisting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I demist?
ought to you demist?
ought to he demist?
ought to we demist?
ought to you demist?
ought to they demist? 	ought to I be demisting?
ought to you be demisting?
ought to he be demisting?
ought to we be demisting?
ought to you be demisting?
ought to they be demisting? 	ought to I have demisted?
ought to you have demisted?
ought to he have demisted?
ought to we have demisted?
ought to you have demisted?
ought to they have demisted? 	ought to I have been demisting?
ought to you have been demisting?
ought to he have been demisting?
ought to we have been demisting?
ought to you have been demisting?
ought to they have been demisting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to demist?
ought you not to demist?
ought he not to demist?
ought we not to demist?
ought you not to demist?
ought they not to demist? 	ought I not to be demisting?
ought you not to be demisting?
ought he not to be demisting?
ought we not to be demisting?
ought you not to be demisting?
ought they not to be demisting? 	ought I not to have demisted?
ought you not to have demisted?
ought he not to have demisted?
ought we not to have demisted?
ought you not to have demisted?
ought they not to have demisted? 	ought I not to have been demisting?
ought you not to have been demisting?
ought he not to have been demisting?
ought we not to have been demisting?
ought you not to have been demisting?
ought they not to have been demisting?