must cost
Unregelmä&szlig;iges Verb: cost - cost- cost

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must cost
you must cost
she must cost
we must cost
you must cost
they must cost 	I must be costing
you must be costing
she must be costing
we must be costing
you must be costing
they must be costing	I must have cost
you must have cost
she must have cost
we must have cost
you must have cost
they must have cost	I must have been costing
you must have been costing
she must have been costing
we must have been costing
you must have been costing
they must have been costing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I mustn't cost
you mustn't cost
she mustn't cost
we mustn't cost
you mustn't cost
they mustn't cost 	I mustn't be costing
you mustn't be costing
she mustn't be costing
we mustn't be costing
you mustn't be costing
they mustn't be costing	I mustn't have cost
you mustn't have cost
she mustn't have cost
we mustn't have cost
you mustn't have cost
they mustn't have cost	I mustn't have been costing
you mustn't have been costing
she mustn't have been costing
we mustn't have been costing
you mustn't have been costing
they mustn't have been costing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I cost?
must you cost?
must she cost?
must we cost?
must you cost?
must they cost? 	must I be costing?
must you be costing?
must she be costing?
must we be costing?
must you be costing?
must they be costing? 	must I have cost?
must you have cost?
must she have cost?
must we have cost?
must you have cost?
must they have cost? 	must I have been costing?
must you have been costing?
must she have been costing?
must we have been costing?
must you have been costing?
must they have been costing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
mustn't I cost?
mustn't you cost?
mustn't she cost?
mustn't we cost?
mustn't you cost?
mustn't they cost? 	mustn't I be costing?
mustn't you be costing?
mustn't she be costing?
mustn't we be costing?
mustn't you be costing?
mustn't they be costing? 	mustn't I have cost?
mustn't you have cost?
mustn't she have cost?
mustn't we have cost?
mustn't you have cost?
mustn't they have cost? 	mustn't I have been costing?
mustn't you have been costing?
mustn't she have been costing?
mustn't we have been costing?
mustn't you have been costing?
mustn't they have been costing?