English verb conjugation
MUST OBTUND

Regular verb: obtund - obtunded - obtunded

Affirmation

Simple form	V-ing form
I must obtund you must obtund he must obtund we must obtund you must obtund they must obtund	I must be obtunding you must be obtunding he must be obtunding we must be obtunding you must be obtunding they must be obtunding
Perfect	V-ing perfect
I must have obtunded you must have obtunded he must have obtunded we must have obtunded you must have obtunded they must have obtunded	I must have been obtunding you must have been obtunding he must have been obtunding we must have been obtunding you must have been obtunding they must have been obtunding

Negation

Simple form	V-ing form
I must not obtund you must not obtund he must not obtund we must not obtund you must not obtund they must not obtund	I must not be obtunding you must not be obtunding he must not be obtunding we must not be obtunding you must not be obtunding they must not be obtunding
Perfect	V-ing perfect
I must not have obtunded you must not have obtunded he must not have obtunded we must not have obtunded you must not have obtunded they must not have obtunded	I must not have been obtunding you must not have been obtunding he must not have been obtunding we must not have been obtunding you must not have been obtunding they must not have been obtunding

Interrogative form

Simple form	V-ing form
must I obtund? must you obtund? must he obtund? must we obtund? must you obtund? must they obtund?	must I be obtunding? must you be obtunding? must he be obtunding? must we be obtunding? must you be obtunding? must they be obtunding?
Perfect	V-ing perfect
must I have obtunded? must you have obtunded? must he have obtunded? must we have obtunded? must you have obtunded? must they have obtunded?	must I have been obtunding? must you have been obtunding? must he have been obtunding? must we have been obtunding? must you have been obtunding? must they have been obtunding?

Interro-negative form

Simple form	V-ing form
must I not obtund? must you not obtund? must he not obtund? must we not obtund? must you not obtund? must they not obtund?	must I not be obtunding? must you not be obtunding? must he not be obtunding? must we not be obtunding? must you not be obtunding? must they not be obtunding?
Perfect	V-ing perfect
must I not have obtunded? must you not have obtunded? must he not have obtunded? must we not have obtunded? must you not have obtunded? must they not have obtunded?	must I not have been obtunding? must you not have been obtunding? must he not have been obtunding? must we not have been obtunding? must you not have been obtunding? must they not have been obtunding?