shall mask
Verbo regular: mask - masked- masked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall mask
you shall mask
he shall mask
we shall mask
you shall mask
they shall mask 	I shall be masking
you shall be masking
he shall be masking
we shall be masking
you shall be masking
they shall be masking	I shall have masked
you shall have masked
he shall have masked
we shall have masked
you shall have masked
they shall have masked	I shall have been masking
you shall have been masking
he shall have been masking
we shall have been masking
you shall have been masking
they shall have been masking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shall not mask
you shall not mask
he shall not mask
we shall not mask
you shall not mask
they shall not mask 	I shall not be masking
you shall not be masking
he shall not be masking
we shall not be masking
you shall not be masking
they shall not be masking	I shall not have masked
you shall not have masked
he shall not have masked
we shall not have masked
you shall not have masked
they shall not have masked	I shall not have been masking
you shall not have been masking
he shall not have been masking
we shall not have been masking
you shall not have been masking
they shall not have been masking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I mask?
shall you mask?
shall he mask?
shall we mask?
shall you mask?
shall they mask? 	shall I be masking?
shall you be masking?
shall he be masking?
shall we be masking?
shall you be masking?
shall they be masking? 	shall I have masked?
shall you have masked?
shall he have masked?
shall we have masked?
shall you have masked?
shall they have masked? 	shall I have been masking?
shall you have been masking?
shall he have been masking?
shall we have been masking?
shall you have been masking?
shall they have been masking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I not mask?
shall you not mask?
shall he not mask?
shall we not mask?
shall you not mask?
shall they not mask? 	shall I not be masking?
shall you not be masking?
shall he not be masking?
shall we not be masking?
shall you not be masking?
shall they not be masking? 	shall I not have masked?
shall you not have masked?
shall he not have masked?
shall we not have masked?
shall you not have masked?
shall they not have masked? 	shall I not have been masking?
shall you not have been masking?
shall he not have been masking?
shall we not have been masking?
shall you not have been masking?
shall they not have been masking?