I can chirp you can chirp he can chirp we can chirp you can chirp they can chirp
Forma con V-ing
I can be chirping you can be chirping he can be chirping we can be chirping you can be chirping they can be chirping
Perfecto
I can have chirped you can have chirped he can have chirped we can have chirped you can have chirped they can have chirped
Perfecto con V-ing
I can have been chirping you can have been chirping he can have been chirping we can have been chirping you can have been chirping they can have been chirping
Negación
Forma simple
I can't chirp you can't chirp he can't chirp we can't chirp you can't chirp they can't chirp
Forma con V-ing
I can't be chirping you can't be chirping he can't be chirping we can't be chirping you can't be chirping they can't be chirping
Perfecto
I can't have chirped you can't have chirped he can't have chirped we can't have chirped you can't have chirped they can't have chirped
Perfecto con V-ing
I can't have been chirping you can't have been chirping he can't have been chirping we can't have been chirping you can't have been chirping they can't have been chirping
Forma interrogativa
Forma simple
can I chirp? can you chirp? can he chirp? can we chirp? can you chirp? can they chirp?
Forma con V-ing
can I be chirping? can you be chirping? can he be chirping? can we be chirping? can you be chirping? can they be chirping?
Perfecto
can I have chirped? can you have chirped? can he have chirped? can we have chirped? can you have chirped? can they have chirped?
Perfecto con V-ing
can I have been chirping? can you have been chirping? can he have been chirping? can we have been chirping? can you have been chirping? can they have been chirping?
Forma interro-negativa
Forma simple
can't I chirp? can't you chirp? can't he chirp? can't we chirp? can't you chirp? can't they chirp?
Forma con V-ing
can't I be chirping? can't you be chirping? can't he be chirping? can't we be chirping? can't you be chirping? can't they be chirping?
Perfecto
can't I have chirped? can't you have chirped? can't he have chirped? can't we have chirped? can't you have chirped? can't they have chirped?
Perfecto con V-ing
can't I have been chirping? can't you have been chirping? can't he have been chirping? can't we have been chirping? can't you have been chirping? can't they have been chirping?