ought to fuse
Regular verb: fuse - fused- fused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to fuse
you ought to fuse
he ought to fuse
we ought to fuse
you ought to fuse
they ought to fuse 	I ought to be fusing
you ought to be fusing
he ought to be fusing
we ought to be fusing
you ought to be fusing
they ought to be fusing	I ought to have fused
you ought to have fused
he ought to have fused
we ought to have fused
you ought to have fused
they ought to have fused	I ought to have been fusing
you ought to have been fusing
he ought to have been fusing
we ought to have been fusing
you ought to have been fusing
they ought to have been fusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to fuse
you ought not to fuse
he ought not to fuse
we ought not to fuse
you ought not to fuse
they ought not to fuse 	I ought not to fusing
you ought not to fusing
he ought not to fusing
we ought not to fusing
you ought not to fusing
they ought not to fusing	I ought not to have fused
you ought not to have fused
he ought not to have fused
we ought not to have fused
you ought not to have fused
they ought not to have fused	I ought not to have been fusing
you ought not to have been fusing
he ought not to have been fusing
we ought not to have been fusing
you ought not to have been fusing
they ought not to have been fusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I fuse?
ought to you fuse?
ought to he fuse?
ought to we fuse?
ought to you fuse?
ought to they fuse? 	ought to I be fusing?
ought to you be fusing?
ought to he be fusing?
ought to we be fusing?
ought to you be fusing?
ought to they be fusing? 	ought to I have fused?
ought to you have fused?
ought to he have fused?
ought to we have fused?
ought to you have fused?
ought to they have fused? 	ought to I have been fusing?
ought to you have been fusing?
ought to he have been fusing?
ought to we have been fusing?
ought to you have been fusing?
ought to they have been fusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to fuse?
ought you not to fuse?
ought he not to fuse?
ought we not to fuse?
ought you not to fuse?
ought they not to fuse? 	ought I not to be fusing?
ought you not to be fusing?
ought he not to be fusing?
ought we not to be fusing?
ought you not to be fusing?
ought they not to be fusing? 	ought I not to have fused?
ought you not to have fused?
ought he not to have fused?
ought we not to have fused?
ought you not to have fused?
ought they not to have fused? 	ought I not to have been fusing?
ought you not to have been fusing?
ought he not to have been fusing?
ought we not to have been fusing?
ought you not to have been fusing?
ought they not to have been fusing?