must sanction
Regular verb: sanction - sanctioned- sanctioned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sanction
you must sanction
she must sanction
we must sanction
you must sanction
they must sanction 	I must be sanctioning
you must be sanctioning
she must be sanctioning
we must be sanctioning
you must be sanctioning
they must be sanctioning	I must have sanctioned
you must have sanctioned
she must have sanctioned
we must have sanctioned
you must have sanctioned
they must have sanctioned	I must have been sanctioning
you must have been sanctioning
she must have been sanctioning
we must have been sanctioning
you must have been sanctioning
they must have been sanctioning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't sanction
you mustn't sanction
she mustn't sanction
we mustn't sanction
you mustn't sanction
they mustn't sanction 	I mustn't be sanctioning
you mustn't be sanctioning
she mustn't be sanctioning
we mustn't be sanctioning
you mustn't be sanctioning
they mustn't be sanctioning	I mustn't have sanctioned
you mustn't have sanctioned
she mustn't have sanctioned
we mustn't have sanctioned
you mustn't have sanctioned
they mustn't have sanctioned	I mustn't have been sanctioning
you mustn't have been sanctioning
she mustn't have been sanctioning
we mustn't have been sanctioning
you mustn't have been sanctioning
they mustn't have been sanctioning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I sanction?
must you sanction?
must she sanction?
must we sanction?
must you sanction?
must they sanction? 	must I be sanctioning?
must you be sanctioning?
must she be sanctioning?
must we be sanctioning?
must you be sanctioning?
must they be sanctioning? 	must I have sanctioned?
must you have sanctioned?
must she have sanctioned?
must we have sanctioned?
must you have sanctioned?
must they have sanctioned? 	must I have been sanctioning?
must you have been sanctioning?
must she have been sanctioning?
must we have been sanctioning?
must you have been sanctioning?
must they have been sanctioning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I sanction?
mustn't you sanction?
mustn't she sanction?
mustn't we sanction?
mustn't you sanction?
mustn't they sanction? 	mustn't I be sanctioning?
mustn't you be sanctioning?
mustn't she be sanctioning?
mustn't we be sanctioning?
mustn't you be sanctioning?
mustn't they be sanctioning? 	mustn't I have sanctioned?
mustn't you have sanctioned?
mustn't she have sanctioned?
mustn't we have sanctioned?
mustn't you have sanctioned?
mustn't they have sanctioned? 	mustn't I have been sanctioning?
mustn't you have been sanctioning?
mustn't she have been sanctioning?
mustn't we have been sanctioning?
mustn't you have been sanctioning?
mustn't they have been sanctioning?