can gas
Verbo regular: gas - gassed- gassed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can gas
you can gas
he can gas
we can gas
you can gas
they can gas 	I can be gassing
you can be gassing
he can be gassing
we can be gassing
you can be gassing
they can be gassing	I can have gassed
you can have gassed
he can have gassed
we can have gassed
you can have gassed
they can have gassed	I can have been gassing
you can have been gassing
he can have been gassing
we can have been gassing
you can have been gassing
they can have been gassing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot gas
you cannot gas
he cannot gas
we cannot gas
you cannot gas
they cannot gas 	I cannot be gassing
you cannot be gassing
he cannot be gassing
we cannot be gassing
you cannot be gassing
they cannot be gassing	I cannot have gassed
you cannot have gassed
he cannot have gassed
we cannot have gassed
you cannot have gassed
they cannot have gassed	I cannot have been gassing
you cannot have been gassing
he cannot have been gassing
we cannot have been gassing
you cannot have been gassing
they cannot have been gassing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I gas?
can you gas?
can he gas?
can we gas?
can you gas?
can they gas? 	can I be gassing?
can you be gassing?
can he be gassing?
can we be gassing?
can you be gassing?
can they be gassing? 	can I have gassed?
can you have gassed?
can he have gassed?
can we have gassed?
can you have gassed?
can they have gassed? 	can I have been gassing?
can you have been gassing?
can he have been gassing?
can we have been gassing?
can you have been gassing?
can they have been gassing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not gas?
can you not gas?
can he not gas?
can we not gas?
can you not gas?
can they not gas? 	can I not be gassing?
can you not be gassing?
can he not be gassing?
can we not be gassing?
can you not be gassing?
can they not be gassing? 	can I not have gassed?
can you not have gassed?
can he not have gassed?
can we not have gassed?
can you not have gassed?
can they not have gassed? 	can I not have been gassing?
can you not have been gassing?
can he not have been gassing?
can we not have been gassing?
can you not have been gassing?
can they not have been gassing?