ought to cavern
Regular verb: cavern - caverned- caverned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to cavern
you ought to cavern
she ought to cavern
we ought to cavern
you ought to cavern
they ought to cavern 	I ought to be caverning
you ought to be caverning
she ought to be caverning
we ought to be caverning
you ought to be caverning
they ought to be caverning	I ought to have caverned
you ought to have caverned
she ought to have caverned
we ought to have caverned
you ought to have caverned
they ought to have caverned	I ought to have been caverning
you ought to have been caverning
she ought to have been caverning
we ought to have been caverning
you ought to have been caverning
they ought to have been caverning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to cavern
you ought not to cavern
she ought not to cavern
we ought not to cavern
you ought not to cavern
they ought not to cavern 	I ought not to caverning
you ought not to caverning
she ought not to caverning
we ought not to caverning
you ought not to caverning
they ought not to caverning	I ought not to have caverned
you ought not to have caverned
she ought not to have caverned
we ought not to have caverned
you ought not to have caverned
they ought not to have caverned	I ought not to have been caverning
you ought not to have been caverning
she ought not to have been caverning
we ought not to have been caverning
you ought not to have been caverning
they ought not to have been caverning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I cavern?
ought to you cavern?
ought to she cavern?
ought to we cavern?
ought to you cavern?
ought to they cavern? 	ought to I be caverning?
ought to you be caverning?
ought to she be caverning?
ought to we be caverning?
ought to you be caverning?
ought to they be caverning? 	ought to I have caverned?
ought to you have caverned?
ought to she have caverned?
ought to we have caverned?
ought to you have caverned?
ought to they have caverned? 	ought to I have been caverning?
ought to you have been caverning?
ought to she have been caverning?
ought to we have been caverning?
ought to you have been caverning?
ought to they have been caverning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to cavern?
ought you not to cavern?
ought she not to cavern?
ought we not to cavern?
ought you not to cavern?
ought they not to cavern? 	ought I not to be caverning?
ought you not to be caverning?
ought she not to be caverning?
ought we not to be caverning?
ought you not to be caverning?
ought they not to be caverning? 	ought I not to have caverned?
ought you not to have caverned?
ought she not to have caverned?
ought we not to have caverned?
ought you not to have caverned?
ought they not to have caverned? 	ought I not to have been caverning?
ought you not to have been caverning?
ought she not to have been caverning?
ought we not to have been caverning?
ought you not to have been caverning?
ought they not to have been caverning?