must kvetch
Verbo regular: kvetch - kvetched- kvetched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must kvetch
you must kvetch
he must kvetch
we must kvetch
you must kvetch
they must kvetch 	I must be kvetching
you must be kvetching
he must be kvetching
we must be kvetching
you must be kvetching
they must be kvetching	I must have kvetched
you must have kvetched
he must have kvetched
we must have kvetched
you must have kvetched
they must have kvetched	I must have been kvetching
you must have been kvetching
he must have been kvetching
we must have been kvetching
you must have been kvetching
they must have been kvetching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not kvetch
you must not kvetch
he must not kvetch
we must not kvetch
you must not kvetch
they must not kvetch 	I must not be kvetching
you must not be kvetching
he must not be kvetching
we must not be kvetching
you must not be kvetching
they must not be kvetching	I must not have kvetched
you must not have kvetched
he must not have kvetched
we must not have kvetched
you must not have kvetched
they must not have kvetched	I must not have been kvetching
you must not have been kvetching
he must not have been kvetching
we must not have been kvetching
you must not have been kvetching
they must not have been kvetching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I kvetch?
must you kvetch?
must he kvetch?
must we kvetch?
must you kvetch?
must they kvetch? 	must I be kvetching?
must you be kvetching?
must he be kvetching?
must we be kvetching?
must you be kvetching?
must they be kvetching? 	must I have kvetched?
must you have kvetched?
must he have kvetched?
must we have kvetched?
must you have kvetched?
must they have kvetched? 	must I have been kvetching?
must you have been kvetching?
must he have been kvetching?
must we have been kvetching?
must you have been kvetching?
must they have been kvetching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not kvetch?
must you not kvetch?
must he not kvetch?
must we not kvetch?
must you not kvetch?
must they not kvetch? 	must I not be kvetching?
must you not be kvetching?
must he not be kvetching?
must we not be kvetching?
must you not be kvetching?
must they not be kvetching? 	must I not have kvetched?
must you not have kvetched?
must he not have kvetched?
must we not have kvetched?
must you not have kvetched?
must they not have kvetched? 	must I not have been kvetching?
must you not have been kvetching?
must he not have been kvetching?
must we not have been kvetching?
must you not have been kvetching?
must they not have been kvetching?