must engender
Regular verb: engender - engendered- engendered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must engender
you must engender
he must engender
we must engender
you must engender
they must engender 	I must be engendering
you must be engendering
he must be engendering
we must be engendering
you must be engendering
they must be engendering	I must have engendered
you must have engendered
he must have engendered
we must have engendered
you must have engendered
they must have engendered	I must have been engendering
you must have been engendering
he must have been engendering
we must have been engendering
you must have been engendering
they must have been engendering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not engender
you must not engender
he must not engender
we must not engender
you must not engender
they must not engender 	I must not be engendering
you must not be engendering
he must not be engendering
we must not be engendering
you must not be engendering
they must not be engendering	I must not have engendered
you must not have engendered
he must not have engendered
we must not have engendered
you must not have engendered
they must not have engendered	I must not have been engendering
you must not have been engendering
he must not have been engendering
we must not have been engendering
you must not have been engendering
they must not have been engendering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I engender?
must you engender?
must he engender?
must we engender?
must you engender?
must they engender? 	must I be engendering?
must you be engendering?
must he be engendering?
must we be engendering?
must you be engendering?
must they be engendering? 	must I have engendered?
must you have engendered?
must he have engendered?
must we have engendered?
must you have engendered?
must they have engendered? 	must I have been engendering?
must you have been engendering?
must he have been engendering?
must we have been engendering?
must you have been engendering?
must they have been engendering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not engender?
must you not engender?
must he not engender?
must we not engender?
must you not engender?
must they not engender? 	must I not be engendering?
must you not be engendering?
must he not be engendering?
must we not be engendering?
must you not be engendering?
must they not be engendering? 	must I not have engendered?
must you not have engendered?
must he not have engendered?
must we not have engendered?
must you not have engendered?
must they not have engendered? 	must I not have been engendering?
must you not have been engendering?
must he not have been engendering?
must we not have been engendering?
must you not have been engendering?
must they not have been engendering?