English verb conjugation
MAY UNDULATE

Regular verb: undulate - undulated - undulated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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