must succor
Regular verb: succor - succored- succored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must succor
you must succor
she must succor
we must succor
you must succor
they must succor 	I must be succoring
you must be succoring
she must be succoring
we must be succoring
you must be succoring
they must be succoring	I must have succored
you must have succored
she must have succored
we must have succored
you must have succored
they must have succored	I must have been succoring
you must have been succoring
she must have been succoring
we must have been succoring
you must have been succoring
they must have been succoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't succor
you mustn't succor
she mustn't succor
we mustn't succor
you mustn't succor
they mustn't succor 	I mustn't be succoring
you mustn't be succoring
she mustn't be succoring
we mustn't be succoring
you mustn't be succoring
they mustn't be succoring	I mustn't have succored
you mustn't have succored
she mustn't have succored
we mustn't have succored
you mustn't have succored
they mustn't have succored	I mustn't have been succoring
you mustn't have been succoring
she mustn't have been succoring
we mustn't have been succoring
you mustn't have been succoring
they mustn't have been succoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I succor?
must you succor?
must she succor?
must we succor?
must you succor?
must they succor? 	must I be succoring?
must you be succoring?
must she be succoring?
must we be succoring?
must you be succoring?
must they be succoring? 	must I have succored?
must you have succored?
must she have succored?
must we have succored?
must you have succored?
must they have succored? 	must I have been succoring?
must you have been succoring?
must she have been succoring?
must we have been succoring?
must you have been succoring?
must they have been succoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I succor?
mustn't you succor?
mustn't she succor?
mustn't we succor?
mustn't you succor?
mustn't they succor? 	mustn't I be succoring?
mustn't you be succoring?
mustn't she be succoring?
mustn't we be succoring?
mustn't you be succoring?
mustn't they be succoring? 	mustn't I have succored?
mustn't you have succored?
mustn't she have succored?
mustn't we have succored?
mustn't you have succored?
mustn't they have succored? 	mustn't I have been succoring?
mustn't you have been succoring?
mustn't she have been succoring?
mustn't we have been succoring?
mustn't you have been succoring?
mustn't they have been succoring?