may underbid
Irregular verb: underbid - underbid- underbid

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may underbid
you may underbid
he may underbid
we may underbid
you may underbid
they may underbid 	I may be underbidding
you may be underbidding
he may be underbidding
we may be underbidding
you may be underbidding
they may be underbidding	I may have underbid
you may have underbid
he may have underbid
we may have underbid
you may have underbid
they may have underbid	I may have been underbidding
you may have been underbidding
he may have been underbidding
we may have been underbidding
you may have been underbidding
they may have been underbidding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't underbid
you mayn't underbid
he mayn't underbid
we mayn't underbid
you mayn't underbid
they mayn't underbid 	I mayn't be underbidding
you mayn't be underbidding
he mayn't be underbidding
we mayn't be underbidding
you mayn't be underbidding
they mayn't be underbidding	I mayn't have underbid
you mayn't have underbid
he mayn't have underbid
we mayn't have underbid
you mayn't have underbid
they mayn't have underbid	I mayn't have been underbidding
you mayn't have been underbidding
he mayn't have been underbidding
we mayn't have been underbidding
you mayn't have been underbidding
they mayn't have been underbidding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I underbid?
may you underbid?
may he underbid?
may we underbid?
may you underbid?
may they underbid? 	may I be underbidding?
may you be underbidding?
may he be underbidding?
may we be underbidding?
may you be underbidding?
may they be underbidding? 	may I have underbid?
may you have underbid?
may he have underbid?
may we have underbid?
may you have underbid?
may they have underbid? 	may I have been underbidding?
may you have been underbidding?
may he have been underbidding?
may we have been underbidding?
may you have been underbidding?
may they have been underbidding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I underbid?
mayn't you underbid?
mayn't he underbid?
mayn't we underbid?
mayn't you underbid?
mayn't they underbid? 	mayn't I be underbidding?
mayn't you be underbidding?
mayn't he be underbidding?
mayn't we be underbidding?
mayn't you be underbidding?
mayn't they be underbidding? 	mayn't I have underbid?
mayn't you have underbid?
mayn't he have underbid?
mayn't we have underbid?
mayn't you have underbid?
mayn't they have underbid? 	mayn't I have been underbidding?
mayn't you have been underbidding?
mayn't he have been underbidding?
mayn't we have been underbidding?
mayn't you have been underbidding?
mayn't they have been underbidding?