may undulate
Verbo regular: undulate - undulated- undulated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't undulate
you mayn't undulate
he mayn't undulate
we mayn't undulate
you mayn't undulate
they mayn't undulate 	I mayn't be undulating
you mayn't be undulating
he mayn't be undulating
we mayn't be undulating
you mayn't be undulating
they mayn't be undulating	I mayn't have undulated
you mayn't have undulated
he mayn't have undulated
we mayn't have undulated
you mayn't have undulated
they mayn't have undulated	I mayn't have been undulating
you mayn't have been undulating
he mayn't have been undulating
we mayn't have been undulating
you mayn't have been undulating
they mayn't have been undulating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I undulate?
mayn't you undulate?
mayn't he undulate?
mayn't we undulate?
mayn't you undulate?
mayn't they undulate? 	mayn't I be undulating?
mayn't you be undulating?
mayn't he be undulating?
mayn't we be undulating?
mayn't you be undulating?
mayn't they be undulating? 	mayn't I have undulated?
mayn't you have undulated?
mayn't he have undulated?
mayn't we have undulated?
mayn't you have undulated?
mayn't they have undulated? 	mayn't I have been undulating?
mayn't you have been undulating?
mayn't he have been undulating?
mayn't we have been undulating?
mayn't you have been undulating?
mayn't they have been undulating?