English verb conjugation
OUGHT TO OCCUR

Regular verb: occur - occurred - occurred

Affirmation

Simple form	V-ing form
I ought to occur you ought to occur he ought to occur we ought to occur you ought to occur they ought to occur	I ought to be occurring you ought to be occurring he ought to be occurring we ought to be occurring you ought to be occurring they ought to be occurring
Perfect	V-ing perfect
I ought to have occurred you ought to have occurred he ought to have occurred we ought to have occurred you ought to have occurred they ought to have occurred	I ought to have been occurring you ought to have been occurring he ought to have been occurring we ought to have been occurring you ought to have been occurring they ought to have been occurring

Negation

Simple form	V-ing form
I ought not to occur you ought not to occur he ought not to occur we ought not to occur you ought not to occur they ought not to occur	I ought not to occurring you ought not to occurring he ought not to occurring we ought not to occurring you ought not to occurring they ought not to occurring
Perfect	V-ing perfect
I ought not to have occurred you ought not to have occurred he ought not to have occurred we ought not to have occurred you ought not to have occurred they ought not to have occurred	I ought not to have been occurring you ought not to have been occurring he ought not to have been occurring we ought not to have been occurring you ought not to have been occurring they ought not to have been occurring

Interrogative form

Simple form	V-ing form
ought to I occur? ought to you occur? ought to he occur? ought to we occur? ought to you occur? ought to they occur?	ought to I be occurring? ought to you be occurring? ought to he be occurring? ought to we be occurring? ought to you be occurring? ought to they be occurring?
Perfect	V-ing perfect
ought to I have occurred? ought to you have occurred? ought to he have occurred? ought to we have occurred? ought to you have occurred? ought to they have occurred?	ought to I have been occurring? ought to you have been occurring? ought to he have been occurring? ought to we have been occurring? ought to you have been occurring? ought to they have been occurring?

Interro-negative form

Simple form	V-ing form
ought I not to occur? ought you not to occur? ought he not to occur? ought we not to occur? ought you not to occur? ought they not to occur?	ought I not to be occurring? ought you not to be occurring? ought he not to be occurring? ought we not to be occurring? ought you not to be occurring? ought they not to be occurring?
Perfect	V-ing perfect
ought I not to have occurred? ought you not to have occurred? ought he not to have occurred? ought we not to have occurred? ought you not to have occurred? ought they not to have occurred?	ought I not to have been occurring? ought you not to have been occurring? ought he not to have been occurring? ought we not to have been occurring? ought you not to have been occurring? ought they not to have been occurring?