I can peck you can peck he can peck we can peck you can peck they can peck
Forma con V-ing
I can be pecking you can be pecking he can be pecking we can be pecking you can be pecking they can be pecking
Perfecto
I can have pecked you can have pecked he can have pecked we can have pecked you can have pecked they can have pecked
Perfecto con V-ing
I can have been pecking you can have been pecking he can have been pecking we can have been pecking you can have been pecking they can have been pecking
Negación
Forma simple
I can't peck you can't peck he can't peck we can't peck you can't peck they can't peck
Forma con V-ing
I can't be pecking you can't be pecking he can't be pecking we can't be pecking you can't be pecking they can't be pecking
Perfecto
I can't have pecked you can't have pecked he can't have pecked we can't have pecked you can't have pecked they can't have pecked
Perfecto con V-ing
I can't have been pecking you can't have been pecking he can't have been pecking we can't have been pecking you can't have been pecking they can't have been pecking
Forma interrogativa
Forma simple
can I peck? can you peck? can he peck? can we peck? can you peck? can they peck?
Forma con V-ing
can I be pecking? can you be pecking? can he be pecking? can we be pecking? can you be pecking? can they be pecking?
Perfecto
can I have pecked? can you have pecked? can he have pecked? can we have pecked? can you have pecked? can they have pecked?
Perfecto con V-ing
can I have been pecking? can you have been pecking? can he have been pecking? can we have been pecking? can you have been pecking? can they have been pecking?
Forma interro-negativa
Forma simple
can't I peck? can't you peck? can't he peck? can't we peck? can't you peck? can't they peck?
Forma con V-ing
can't I be pecking? can't you be pecking? can't he be pecking? can't we be pecking? can't you be pecking? can't they be pecking?
Perfecto
can't I have pecked? can't you have pecked? can't he have pecked? can't we have pecked? can't you have pecked? can't they have pecked?
Perfecto con V-ing
can't I have been pecking? can't you have been pecking? can't he have been pecking? can't we have been pecking? can't you have been pecking? can't they have been pecking?