can glass
Verbo regular: glass - glassed- glassed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can glass
you can glass
he can glass
we can glass
you can glass
they can glass 	I can be glassing
you can be glassing
he can be glassing
we can be glassing
you can be glassing
they can be glassing	I can have glassed
you can have glassed
he can have glassed
we can have glassed
you can have glassed
they can have glassed	I can have been glassing
you can have been glassing
he can have been glassing
we can have been glassing
you can have been glassing
they can have been glassing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot glass
you cannot glass
he cannot glass
we cannot glass
you cannot glass
they cannot glass 	I cannot be glassing
you cannot be glassing
he cannot be glassing
we cannot be glassing
you cannot be glassing
they cannot be glassing	I cannot have glassed
you cannot have glassed
he cannot have glassed
we cannot have glassed
you cannot have glassed
they cannot have glassed	I cannot have been glassing
you cannot have been glassing
he cannot have been glassing
we cannot have been glassing
you cannot have been glassing
they cannot have been glassing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I glass?
can you glass?
can he glass?
can we glass?
can you glass?
can they glass? 	can I be glassing?
can you be glassing?
can he be glassing?
can we be glassing?
can you be glassing?
can they be glassing? 	can I have glassed?
can you have glassed?
can he have glassed?
can we have glassed?
can you have glassed?
can they have glassed? 	can I have been glassing?
can you have been glassing?
can he have been glassing?
can we have been glassing?
can you have been glassing?
can they have been glassing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not glass?
can you not glass?
can he not glass?
can we not glass?
can you not glass?
can they not glass? 	can I not be glassing?
can you not be glassing?
can he not be glassing?
can we not be glassing?
can you not be glassing?
can they not be glassing? 	can I not have glassed?
can you not have glassed?
can he not have glassed?
can we not have glassed?
can you not have glassed?
can they not have glassed? 	can I not have been glassing?
can you not have been glassing?
can he not have been glassing?
can we not have been glassing?
can you not have been glassing?
can they not have been glassing?