shall decrease
Verbo regular: decrease - decreased- decreased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall decrease
you shall decrease
he shall decrease
we shall decrease
you shall decrease
they shall decrease 	I shall be decreasing
you shall be decreasing
he shall be decreasing
we shall be decreasing
you shall be decreasing
they shall be decreasing	I shall have decreased
you shall have decreased
he shall have decreased
we shall have decreased
you shall have decreased
they shall have decreased	I shall have been decreasing
you shall have been decreasing
he shall have been decreasing
we shall have been decreasing
you shall have been decreasing
they shall have been decreasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall not decrease
you shall not decrease
he shall not decrease
we shall not decrease
you shall not decrease
they shall not decrease 	I shall not be decreasing
you shall not be decreasing
he shall not be decreasing
we shall not be decreasing
you shall not be decreasing
they shall not be decreasing	I shall not have decreased
you shall not have decreased
he shall not have decreased
we shall not have decreased
you shall not have decreased
they shall not have decreased	I shall not have been decreasing
you shall not have been decreasing
he shall not have been decreasing
we shall not have been decreasing
you shall not have been decreasing
they shall not have been decreasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I decrease?
shall you decrease?
shall he decrease?
shall we decrease?
shall you decrease?
shall they decrease? 	shall I be decreasing?
shall you be decreasing?
shall he be decreasing?
shall we be decreasing?
shall you be decreasing?
shall they be decreasing? 	shall I have decreased?
shall you have decreased?
shall he have decreased?
shall we have decreased?
shall you have decreased?
shall they have decreased? 	shall I have been decreasing?
shall you have been decreasing?
shall he have been decreasing?
shall we have been decreasing?
shall you have been decreasing?
shall they have been decreasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I not decrease?
shall you not decrease?
shall he not decrease?
shall we not decrease?
shall you not decrease?
shall they not decrease? 	shall I not be decreasing?
shall you not be decreasing?
shall he not be decreasing?
shall we not be decreasing?
shall you not be decreasing?
shall they not be decreasing? 	shall I not have decreased?
shall you not have decreased?
shall he not have decreased?
shall we not have decreased?
shall you not have decreased?
shall they not have decreased? 	shall I not have been decreasing?
shall you not have been decreasing?
shall he not have been decreasing?
shall we not have been decreasing?
shall you not have been decreasing?
shall they not have been decreasing?