English verb conjugation
MUST COUNTERBID

Irregular verb: counterbid - counterbid - counterbid

Affirmation

Simple form	V-ing form
I must counterbid you must counterbid he must counterbid we must counterbid you must counterbid they must counterbid	I must be counterbiding you must be counterbiding he must be counterbiding we must be counterbiding you must be counterbiding they must be counterbiding
Perfect	V-ing perfect
I must have counterbid you must have counterbid he must have counterbid we must have counterbid you must have counterbid they must have counterbid	I must have been counterbiding you must have been counterbiding he must have been counterbiding we must have been counterbiding you must have been counterbiding they must have been counterbiding

Negation

Simple form	V-ing form
I must not counterbid you must not counterbid he must not counterbid we must not counterbid you must not counterbid they must not counterbid	I must not be counterbiding you must not be counterbiding he must not be counterbiding we must not be counterbiding you must not be counterbiding they must not be counterbiding
Perfect	V-ing perfect
I must not have counterbid you must not have counterbid he must not have counterbid we must not have counterbid you must not have counterbid they must not have counterbid	I must not have been counterbiding you must not have been counterbiding he must not have been counterbiding we must not have been counterbiding you must not have been counterbiding they must not have been counterbiding

Interrogative form

Simple form	V-ing form
must I counterbid? must you counterbid? must he counterbid? must we counterbid? must you counterbid? must they counterbid?	must I be counterbiding? must you be counterbiding? must he be counterbiding? must we be counterbiding? must you be counterbiding? must they be counterbiding?
Perfect	V-ing perfect
must I have counterbid? must you have counterbid? must he have counterbid? must we have counterbid? must you have counterbid? must they have counterbid?	must I have been counterbiding? must you have been counterbiding? must he have been counterbiding? must we have been counterbiding? must you have been counterbiding? must they have been counterbiding?

Interro-negative form

Simple form	V-ing form
must I not counterbid? must you not counterbid? must he not counterbid? must we not counterbid? must you not counterbid? must they not counterbid?	must I not be counterbiding? must you not be counterbiding? must he not be counterbiding? must we not be counterbiding? must you not be counterbiding? must they not be counterbiding?
Perfect	V-ing perfect
must I not have counterbid? must you not have counterbid? must he not have counterbid? must we not have counterbid? must you not have counterbid? must they not have counterbid?	must I not have been counterbiding? must you not have been counterbiding? must he not have been counterbiding? must we not have been counterbiding? must you not have been counterbiding? must they not have been counterbiding?