English verb conjugation
CAN UNDERBID

Irregular verb: underbid - underbid - underbid

Affirmation

Simple form	V-ing form
I can underbid you can underbid she can underbid we can underbid you can underbid they can underbid	I can be underbidding you can be underbidding she can be underbidding we can be underbidding you can be underbidding they can be underbidding
Perfect	V-ing perfect
I can have underbid you can have underbid she can have underbid we can have underbid you can have underbid they can have underbid	I can have been underbidding you can have been underbidding she can have been underbidding we can have been underbidding you can have been underbidding they can have been underbidding

Negation

Simple form	V-ing form
I can't underbid you can't underbid she can't underbid we can't underbid you can't underbid they can't underbid	I can't be underbidding you can't be underbidding she can't be underbidding we can't be underbidding you can't be underbidding they can't be underbidding
Perfect	V-ing perfect
I can't have underbid you can't have underbid she can't have underbid we can't have underbid you can't have underbid they can't have underbid	I can't have been underbidding you can't have been underbidding she can't have been underbidding we can't have been underbidding you can't have been underbidding they can't have been underbidding

Interrogative form

Simple form	V-ing form
can I underbid? can you underbid? can she underbid? can we underbid? can you underbid? can they underbid?	can I be underbidding? can you be underbidding? can she be underbidding? can we be underbidding? can you be underbidding? can they be underbidding?
Perfect	V-ing perfect
can I have underbid? can you have underbid? can she have underbid? can we have underbid? can you have underbid? can they have underbid?	can I have been underbidding? can you have been underbidding? can she have been underbidding? can we have been underbidding? can you have been underbidding? can they have been underbidding?

Interro-negative form

Simple form	V-ing form
can't I underbid? can't you underbid? can't she underbid? can't we underbid? can't you underbid? can't they underbid?	can't I be underbidding? can't you be underbidding? can't she be underbidding? can't we be underbidding? can't you be underbidding? can't they be underbidding?
Perfect	V-ing perfect
can't I have underbid? can't you have underbid? can't she have underbid? can't we have underbid? can't you have underbid? can't they have underbid?	can't I have been underbidding? can't you have been underbidding? can't she have been underbidding? can't we have been underbidding? can't you have been underbidding? can't they have been underbidding?