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 cannot peck you cannot peck he cannot peck we cannot peck you cannot peck they cannot peck
Forma con V-ing
I cannot be pecking you cannot be pecking he cannot be pecking we cannot be pecking you cannot be pecking they cannot be pecking
Perfecto
I cannot have pecked you cannot have pecked he cannot have pecked we cannot have pecked you cannot have pecked they cannot have pecked
Perfecto con V-ing
I cannot have been pecking you cannot have been pecking he cannot have been pecking we cannot have been pecking you cannot have been pecking they cannot 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 I not peck? can you not peck? can he not peck? can we not peck? can you not peck? can they not peck?
Forma con V-ing
can I not be pecking? can you not be pecking? can he not be pecking? can we not be pecking? can you not be pecking? can they not be pecking?
Perfecto
can I not have pecked? can you not have pecked? can he not have pecked? can we not have pecked? can you not have pecked? can they not have pecked?
Perfecto con V-ing
can I not have been pecking? can you not have been pecking? can he not have been pecking? can we not have been pecking? can you not have been pecking? can they not have been pecking?