English verb conjugation
OUGHT TO COUNTERSINK

Irregular verb: countersink - countersank - countersunk

Affirmation

Simple form	V-ing form
I ought to countersink you ought to countersink he ought to countersink we ought to countersink you ought to countersink they ought to countersink	I ought to be countersinking you ought to be countersinking he ought to be countersinking we ought to be countersinking you ought to be countersinking they ought to be countersinking
Perfect	V-ing perfect
I ought to have countersunk you ought to have countersunk he ought to have countersunk we ought to have countersunk you ought to have countersunk they ought to have countersunk	I ought to have been countersinking you ought to have been countersinking he ought to have been countersinking we ought to have been countersinking you ought to have been countersinking they ought to have been countersinking

Negation

Simple form	V-ing form
I ought not to countersink you ought not to countersink he ought not to countersink we ought not to countersink you ought not to countersink they ought not to countersink	I ought not to countersinking you ought not to countersinking he ought not to countersinking we ought not to countersinking you ought not to countersinking they ought not to countersinking
Perfect	V-ing perfect
I ought not to have countersunk you ought not to have countersunk he ought not to have countersunk we ought not to have countersunk you ought not to have countersunk they ought not to have countersunk	I ought not to have been countersinking you ought not to have been countersinking he ought not to have been countersinking we ought not to have been countersinking you ought not to have been countersinking they ought not to have been countersinking

Interrogative form

Simple form	V-ing form
ought to I countersink? ought to you countersink? ought to he countersink? ought to we countersink? ought to you countersink? ought to they countersink?	ought to I be countersinking? ought to you be countersinking? ought to he be countersinking? ought to we be countersinking? ought to you be countersinking? ought to they be countersinking?
Perfect	V-ing perfect
ought to I have countersunk? ought to you have countersunk? ought to he have countersunk? ought to we have countersunk? ought to you have countersunk? ought to they have countersunk?	ought to I have been countersinking? ought to you have been countersinking? ought to he have been countersinking? ought to we have been countersinking? ought to you have been countersinking? ought to they have been countersinking?

Interro-negative form

Simple form	V-ing form
ought I not to countersink? ought you not to countersink? ought he not to countersink? ought we not to countersink? ought you not to countersink? ought they not to countersink?	ought I not to be countersinking? ought you not to be countersinking? ought he not to be countersinking? ought we not to be countersinking? ought you not to be countersinking? ought they not to be countersinking?
Perfect	V-ing perfect
ought I not to have countersunk? ought you not to have countersunk? ought he not to have countersunk? ought we not to have countersunk? ought you not to have countersunk? ought they not to have countersunk?	ought I not to have been countersinking? ought you not to have been countersinking? ought he not to have been countersinking? ought we not to have been countersinking? ought you not to have been countersinking? ought they not to have been countersinking?