I can tinker you can tinker he can tinker we can tinker you can tinker they can tinker
Forma con V-ing
I can be tinkering you can be tinkering he can be tinkering we can be tinkering you can be tinkering they can be tinkering
Perfecto
I can have tinkered you can have tinkered he can have tinkered we can have tinkered you can have tinkered they can have tinkered
Perfecto con V-ing
I can have been tinkering you can have been tinkering he can have been tinkering we can have been tinkering you can have been tinkering they can have been tinkering
Negación
Forma simple
I cannot tinker you cannot tinker he cannot tinker we cannot tinker you cannot tinker they cannot tinker
Forma con V-ing
I cannot be tinkering you cannot be tinkering he cannot be tinkering we cannot be tinkering you cannot be tinkering they cannot be tinkering
Perfecto
I cannot have tinkered you cannot have tinkered he cannot have tinkered we cannot have tinkered you cannot have tinkered they cannot have tinkered
Perfecto con V-ing
I cannot have been tinkering you cannot have been tinkering he cannot have been tinkering we cannot have been tinkering you cannot have been tinkering they cannot have been tinkering
Forma interrogativa
Forma simple
can I tinker? can you tinker? can he tinker? can we tinker? can you tinker? can they tinker?
Forma con V-ing
can I be tinkering? can you be tinkering? can he be tinkering? can we be tinkering? can you be tinkering? can they be tinkering?
Perfecto
can I have tinkered? can you have tinkered? can he have tinkered? can we have tinkered? can you have tinkered? can they have tinkered?
Perfecto con V-ing
can I have been tinkering? can you have been tinkering? can he have been tinkering? can we have been tinkering? can you have been tinkering? can they have been tinkering?
Forma interro-negativa
Forma simple
can I not tinker? can you not tinker? can he not tinker? can we not tinker? can you not tinker? can they not tinker?
Forma con V-ing
can I not be tinkering? can you not be tinkering? can he not be tinkering? can we not be tinkering? can you not be tinkering? can they not be tinkering?
Perfecto
can I not have tinkered? can you not have tinkered? can he not have tinkered? can we not have tinkered? can you not have tinkered? can they not have tinkered?
Perfecto con V-ing
can I not have been tinkering? can you not have been tinkering? can he not have been tinkering? can we not have been tinkering? can you not have been tinkering? can they not have been tinkering?