English verb conjugation
OUGHT TO UNDULATE

Regular verb: undulate - undulated - undulated

Affirmation

Simple form	V-ing form
I ought to undulate you ought to undulate he ought to undulate we ought to undulate you ought to undulate they ought to undulate	I ought to be undulating you ought to be undulating he ought to be undulating we ought to be undulating you ought to be undulating they ought to be undulating
Perfect	V-ing perfect
I ought to have undulated you ought to have undulated he ought to have undulated we ought to have undulated you ought to have undulated they ought to have undulated	I ought to have been undulating you ought to have been undulating he ought to have been undulating we ought to have been undulating you ought to have been undulating they ought to have been undulating

Negation

Simple form	V-ing form
I ought not to undulate you ought not to undulate he ought not to undulate we ought not to undulate you ought not to undulate they ought not to undulate	I ought not to undulating you ought not to undulating he ought not to undulating we ought not to undulating you ought not to undulating they ought not to undulating
Perfect	V-ing perfect
I ought not to have undulated you ought not to have undulated he ought not to have undulated we ought not to have undulated you ought not to have undulated they ought not to have undulated	I ought not to have been undulating you ought not to have been undulating he ought not to have been undulating we ought not to have been undulating you ought not to have been undulating they ought not to have been undulating

Interrogative form

Simple form	V-ing form
ought to I undulate? ought to you undulate? ought to he undulate? ought to we undulate? ought to you undulate? ought to they undulate?	ought to I be undulating? ought to you be undulating? ought to he be undulating? ought to we be undulating? ought to you be undulating? ought to they be undulating?
Perfect	V-ing perfect
ought to I have undulated? ought to you have undulated? ought to he have undulated? ought to we have undulated? ought to you have undulated? ought to they have undulated?	ought to I have been undulating? ought to you have been undulating? ought to he have been undulating? ought to we have been undulating? ought to you have been undulating? ought to they have been undulating?

Interro-negative form

Simple form	V-ing form
ought I not to undulate? ought you not to undulate? ought he not to undulate? ought we not to undulate? ought you not to undulate? ought they not to undulate?	ought I not to be undulating? ought you not to be undulating? ought he not to be undulating? ought we not to be undulating? ought you not to be undulating? ought they not to be undulating?
Perfect	V-ing perfect
ought I not to have undulated? ought you not to have undulated? ought he not to have undulated? ought we not to have undulated? ought you not to have undulated? ought they not to have undulated?	ought I not to have been undulating? ought you not to have been undulating? ought he not to have been undulating? ought we not to have been undulating? ought you not to have been undulating? ought they not to have been undulating?