Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must gronder passer you must gronder passer he must gronder passer we must gronder passer you must gronder passer they must gronder passer
V-ing form
I must be gronder passering you must be gronder passering he must be gronder passering we must be gronder passering you must be gronder passering they must be gronder passering
Perfect
I must have gronder passered you must have gronder passered he must have gronder passered we must have gronder passered you must have gronder passered they must have gronder passered
V-ing perfect
I must have been gronder passering you must have been gronder passering he must have been gronder passering we must have been gronder passering you must have been gronder passering they must have been gronder passering
Negation
Simple form
I must not gronder passer you must not gronder passer he must not gronder passer we must not gronder passer you must not gronder passer they must not gronder passer
V-ing form
I must not be gronder passering you must not be gronder passering he must not be gronder passering we must not be gronder passering you must not be gronder passering they must not be gronder passering
Perfect
I must not have gronder passered you must not have gronder passered he must not have gronder passered we must not have gronder passered you must not have gronder passered they must not have gronder passered
V-ing perfect
I must not have been gronder passering you must not have been gronder passering he must not have been gronder passering we must not have been gronder passering you must not have been gronder passering they must not have been gronder passering
Interrogative form
Simple form
must I gronder passer? must you gronder passer? must he gronder passer? must we gronder passer? must you gronder passer? must they gronder passer?
V-ing form
must I be gronder passering? must you be gronder passering? must he be gronder passering? must we be gronder passering? must you be gronder passering? must they be gronder passering?
Perfect
must I have gronder passered? must you have gronder passered? must he have gronder passered? must we have gronder passered? must you have gronder passered? must they have gronder passered?
V-ing perfect
must I have been gronder passering? must you have been gronder passering? must he have been gronder passering? must we have been gronder passering? must you have been gronder passering? must they have been gronder passering?
Interro-negative form
Simple form
must I not gronder passer? must you not gronder passer? must he not gronder passer? must we not gronder passer? must you not gronder passer? must they not gronder passer?
V-ing form
must I not be gronder passering? must you not be gronder passering? must he not be gronder passering? must we not be gronder passering? must you not be gronder passering? must they not be gronder passering?
Perfect
must I not have gronder passered? must you not have gronder passered? must he not have gronder passered? must we not have gronder passered? must you not have gronder passered? must they not have gronder passered?
V-ing perfect
must I not have been gronder passering? must you not have been gronder passering? must he not have been gronder passering? must we not have been gronder passering? must you not have been gronder passering? must they not have been gronder passering?