must ingather
Regular verb: ingather - ingathered- ingathered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ingather
you must ingather
she must ingather
we must ingather
you must ingather
they must ingather 	I must be ingathering
you must be ingathering
she must be ingathering
we must be ingathering
you must be ingathering
they must be ingathering	I must have ingathered
you must have ingathered
she must have ingathered
we must have ingathered
you must have ingathered
they must have ingathered	I must have been ingathering
you must have been ingathering
she must have been ingathering
we must have been ingathering
you must have been ingathering
they must have been ingathering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ingather
you mustn't ingather
she mustn't ingather
we mustn't ingather
you mustn't ingather
they mustn't ingather 	I mustn't be ingathering
you mustn't be ingathering
she mustn't be ingathering
we mustn't be ingathering
you mustn't be ingathering
they mustn't be ingathering	I mustn't have ingathered
you mustn't have ingathered
she mustn't have ingathered
we mustn't have ingathered
you mustn't have ingathered
they mustn't have ingathered	I mustn't have been ingathering
you mustn't have been ingathering
she mustn't have been ingathering
we mustn't have been ingathering
you mustn't have been ingathering
they mustn't have been ingathering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ingather?
must you ingather?
must she ingather?
must we ingather?
must you ingather?
must they ingather? 	must I be ingathering?
must you be ingathering?
must she be ingathering?
must we be ingathering?
must you be ingathering?
must they be ingathering? 	must I have ingathered?
must you have ingathered?
must she have ingathered?
must we have ingathered?
must you have ingathered?
must they have ingathered? 	must I have been ingathering?
must you have been ingathering?
must she have been ingathering?
must we have been ingathering?
must you have been ingathering?
must they have been ingathering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ingather?
mustn't you ingather?
mustn't she ingather?
mustn't we ingather?
mustn't you ingather?
mustn't they ingather? 	mustn't I be ingathering?
mustn't you be ingathering?
mustn't she be ingathering?
mustn't we be ingathering?
mustn't you be ingathering?
mustn't they be ingathering? 	mustn't I have ingathered?
mustn't you have ingathered?
mustn't she have ingathered?
mustn't we have ingathered?
mustn't you have ingathered?
mustn't they have ingathered? 	mustn't I have been ingathering?
mustn't you have been ingathering?
mustn't she have been ingathering?
mustn't we have been ingathering?
mustn't you have been ingathering?
mustn't they have been ingathering?