ought to diffuse
Regular verb: diffuse - diffused- diffused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to diffuse
you ought to diffuse
she ought to diffuse
we ought to diffuse
you ought to diffuse
they ought to diffuse 	I ought to be diffusing
you ought to be diffusing
she ought to be diffusing
we ought to be diffusing
you ought to be diffusing
they ought to be diffusing	I ought to have diffused
you ought to have diffused
she ought to have diffused
we ought to have diffused
you ought to have diffused
they ought to have diffused	I ought to have been diffusing
you ought to have been diffusing
she ought to have been diffusing
we ought to have been diffusing
you ought to have been diffusing
they ought to have been diffusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to diffuse
you ought not to diffuse
she ought not to diffuse
we ought not to diffuse
you ought not to diffuse
they ought not to diffuse 	I ought not to diffusing
you ought not to diffusing
she ought not to diffusing
we ought not to diffusing
you ought not to diffusing
they ought not to diffusing	I ought not to have diffused
you ought not to have diffused
she ought not to have diffused
we ought not to have diffused
you ought not to have diffused
they ought not to have diffused	I ought not to have been diffusing
you ought not to have been diffusing
she ought not to have been diffusing
we ought not to have been diffusing
you ought not to have been diffusing
they ought not to have been diffusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I diffuse?
ought to you diffuse?
ought to she diffuse?
ought to we diffuse?
ought to you diffuse?
ought to they diffuse? 	ought to I be diffusing?
ought to you be diffusing?
ought to she be diffusing?
ought to we be diffusing?
ought to you be diffusing?
ought to they be diffusing? 	ought to I have diffused?
ought to you have diffused?
ought to she have diffused?
ought to we have diffused?
ought to you have diffused?
ought to they have diffused? 	ought to I have been diffusing?
ought to you have been diffusing?
ought to she have been diffusing?
ought to we have been diffusing?
ought to you have been diffusing?
ought to they have been diffusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to diffuse?
ought you not to diffuse?
ought she not to diffuse?
ought we not to diffuse?
ought you not to diffuse?
ought they not to diffuse? 	ought I not to be diffusing?
ought you not to be diffusing?
ought she not to be diffusing?
ought we not to be diffusing?
ought you not to be diffusing?
ought they not to be diffusing? 	ought I not to have diffused?
ought you not to have diffused?
ought she not to have diffused?
ought we not to have diffused?
ought you not to have diffused?
ought they not to have diffused? 	ought I not to have been diffusing?
ought you not to have been diffusing?
ought she not to have been diffusing?
ought we not to have been diffusing?
ought you not to have been diffusing?
ought they not to have been diffusing?