should grumble
Verbo regular: grumble - grumbled- grumbled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should grumble
you should grumble
he should grumble
we should grumble
you should grumble
they should grumble 	I should be grumbling
you should be grumbling
he should be grumbling
we should be grumbling
you should be grumbling
they should be grumbling	I should have grumbled
you should have grumbled
he should have grumbled
we should have grumbled
you should have grumbled
they should have grumbled	I should have been grumbling
you should have been grumbling
he should have been grumbling
we should have been grumbling
you should have been grumbling
they should have been grumbling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not grumble
you should not grumble
he should not grumble
we should not grumble
you should not grumble
they should not grumble 	I should not be grumbling
you should not be grumbling
he should not be grumbling
we should not be grumbling
you should not be grumbling
they should not be grumbling	I should not have grumbled
you should not have grumbled
he should not have grumbled
we should not have grumbled
you should not have grumbled
they should not have grumbled	I should not have been grumbling
you should not have been grumbling
he should not have been grumbling
we should not have been grumbling
you should not have been grumbling
they should not have been grumbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I grumble?
should you grumble?
should he grumble?
should we grumble?
should you grumble?
should they grumble? 	should I be grumbling?
should you be grumbling?
should he be grumbling?
should we be grumbling?
should you be grumbling?
should they be grumbling? 	should I have grumbled?
should you have grumbled?
should he have grumbled?
should we have grumbled?
should you have grumbled?
should they have grumbled? 	should I have been grumbling?
should you have been grumbling?
should he have been grumbling?
should we have been grumbling?
should you have been grumbling?
should they have been grumbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not grumble?
should you not grumble?
should he not grumble?
should we not grumble?
should you not grumble?
should they not grumble? 	should I not be grumbling?
should you not be grumbling?
should he not be grumbling?
should we not be grumbling?
should you not be grumbling?
should they not be grumbling? 	should I not have grumbled?
should you not have grumbled?
should he not have grumbled?
should we not have grumbled?
should you not have grumbled?
should they not have grumbled? 	should I not have been grumbling?
should you not have been grumbling?
should he not have been grumbling?
should we not have been grumbling?
should you not have been grumbling?
should they not have been grumbling?