ought to dredge
Regular verb: dredge - dredged- dredged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to dredge
you ought to dredge
she ought to dredge
we ought to dredge
you ought to dredge
they ought to dredge 	I ought to be dredging
you ought to be dredging
she ought to be dredging
we ought to be dredging
you ought to be dredging
they ought to be dredging	I ought to have dredged
you ought to have dredged
she ought to have dredged
we ought to have dredged
you ought to have dredged
they ought to have dredged	I ought to have been dredging
you ought to have been dredging
she ought to have been dredging
we ought to have been dredging
you ought to have been dredging
they ought to have been dredging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to dredge
you ought not to dredge
she ought not to dredge
we ought not to dredge
you ought not to dredge
they ought not to dredge 	I ought not to dredging
you ought not to dredging
she ought not to dredging
we ought not to dredging
you ought not to dredging
they ought not to dredging	I ought not to have dredged
you ought not to have dredged
she ought not to have dredged
we ought not to have dredged
you ought not to have dredged
they ought not to have dredged	I ought not to have been dredging
you ought not to have been dredging
she ought not to have been dredging
we ought not to have been dredging
you ought not to have been dredging
they ought not to have been dredging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I dredge?
ought to you dredge?
ought to she dredge?
ought to we dredge?
ought to you dredge?
ought to they dredge? 	ought to I be dredging?
ought to you be dredging?
ought to she be dredging?
ought to we be dredging?
ought to you be dredging?
ought to they be dredging? 	ought to I have dredged?
ought to you have dredged?
ought to she have dredged?
ought to we have dredged?
ought to you have dredged?
ought to they have dredged? 	ought to I have been dredging?
ought to you have been dredging?
ought to she have been dredging?
ought to we have been dredging?
ought to you have been dredging?
ought to they have been dredging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to dredge?
ought you not to dredge?
ought she not to dredge?
ought we not to dredge?
ought you not to dredge?
ought they not to dredge? 	ought I not to be dredging?
ought you not to be dredging?
ought she not to be dredging?
ought we not to be dredging?
ought you not to be dredging?
ought they not to be dredging? 	ought I not to have dredged?
ought you not to have dredged?
ought she not to have dredged?
ought we not to have dredged?
ought you not to have dredged?
ought they not to have dredged? 	ought I not to have been dredging?
ought you not to have been dredging?
ought she not to have been dredging?
ought we not to have been dredging?
ought you not to have been dredging?
ought they not to have been dredging?