ought to desulferise
Regular verb: desulferise - desulferised- desulferised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to desulferise
you ought to desulferise
he ought to desulferise
we ought to desulferise
you ought to desulferise
they ought to desulferise 	I ought to be desulferising
you ought to be desulferising
he ought to be desulferising
we ought to be desulferising
you ought to be desulferising
they ought to be desulferising	I ought to have desulferised
you ought to have desulferised
he ought to have desulferised
we ought to have desulferised
you ought to have desulferised
they ought to have desulferised	I ought to have been desulferising
you ought to have been desulferising
he ought to have been desulferising
we ought to have been desulferising
you ought to have been desulferising
they ought to have been desulferising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to desulferise
you ought not to desulferise
he ought not to desulferise
we ought not to desulferise
you ought not to desulferise
they ought not to desulferise 	I ought not to desulferising
you ought not to desulferising
he ought not to desulferising
we ought not to desulferising
you ought not to desulferising
they ought not to desulferising	I ought not to have desulferised
you ought not to have desulferised
he ought not to have desulferised
we ought not to have desulferised
you ought not to have desulferised
they ought not to have desulferised	I ought not to have been desulferising
you ought not to have been desulferising
he ought not to have been desulferising
we ought not to have been desulferising
you ought not to have been desulferising
they ought not to have been desulferising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I desulferise?
ought to you desulferise?
ought to he desulferise?
ought to we desulferise?
ought to you desulferise?
ought to they desulferise? 	ought to I be desulferising?
ought to you be desulferising?
ought to he be desulferising?
ought to we be desulferising?
ought to you be desulferising?
ought to they be desulferising? 	ought to I have desulferised?
ought to you have desulferised?
ought to he have desulferised?
ought to we have desulferised?
ought to you have desulferised?
ought to they have desulferised? 	ought to I have been desulferising?
ought to you have been desulferising?
ought to he have been desulferising?
ought to we have been desulferising?
ought to you have been desulferising?
ought to they have been desulferising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to desulferise?
ought you not to desulferise?
ought he not to desulferise?
ought we not to desulferise?
ought you not to desulferise?
ought they not to desulferise? 	ought I not to be desulferising?
ought you not to be desulferising?
ought he not to be desulferising?
ought we not to be desulferising?
ought you not to be desulferising?
ought they not to be desulferising? 	ought I not to have desulferised?
ought you not to have desulferised?
ought he not to have desulferised?
ought we not to have desulferised?
ought you not to have desulferised?
ought they not to have desulferised? 	ought I not to have been desulferising?
ought you not to have been desulferising?
ought he not to have been desulferising?
ought we not to have been desulferising?
ought you not to have been desulferising?
ought they not to have been desulferising?