Conjugación del verbo inglés
MUST COST

Verbo irregular: cost - cost - cost

Afirmación

Forma simple	Forma con V-ing
I must cost you must cost he must cost we must cost you must cost they must cost	I must be costing you must be costing he must be costing we must be costing you must be costing they must be costing
Perfecto	Perfecto con V-ing
I must have cost you must have cost he 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 he must have been costing we must have been costing you must have been costing they must have been costing

Negación

Forma simple	Forma con V-ing
I must not cost you must not cost he must not cost we must not cost you must not cost they must not cost	I must not be costing you must not be costing he must not be costing we must not be costing you must not be costing they must not be costing
Perfecto	Perfecto con V-ing
I must not have cost you must not have cost he must not have cost we must not have cost you must not have cost they must not have cost	I must not have been costing you must not have been costing he must not have been costing we must not have been costing you must not have been costing they must not have been costing

Forma interrogativa

Forma simple	Forma con V-ing
must I cost? must you cost? must he cost? must we cost? must you cost? must they cost?	must I be costing? must you be costing? must he be costing? must we be costing? must you be costing? must they be costing?
Perfecto	Perfecto con V-ing
must I have cost? must you have cost? must he 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 he have been costing? must we have been costing? must you have been costing? must they have been costing?

Forma interro-negativa

Forma simple	Forma con V-ing
must I not cost? must you not cost? must he not cost? must we not cost? must you not cost? must they not cost?	must I not be costing? must you not be costing? must he not be costing? must we not be costing? must you not be costing? must they not be costing?
Perfecto	Perfecto con V-ing
must I not have cost? must you not have cost? must he not have cost? must we not have cost? must you not have cost? must they not have cost?	must I not have been costing? must you not have been costing? must he not have been costing? must we not have been costing? must you not have been costing? must they not have been costing?