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 can't tinker you can't tinker he can't tinker we can't tinker you can't tinker they can't tinker
Forma con V-ing
I can't be tinkering you can't be tinkering he can't be tinkering we can't be tinkering you can't be tinkering they can't be tinkering
Perfecto
I can't have tinkered you can't have tinkered he can't have tinkered we can't have tinkered you can't have tinkered they can't have tinkered
Perfecto con V-ing
I can't have been tinkering you can't have been tinkering he can't have been tinkering we can't have been tinkering you can't have been tinkering they can't 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't I tinker? can't you tinker? can't he tinker? can't we tinker? can't you tinker? can't they tinker?
Forma con V-ing
can't I be tinkering? can't you be tinkering? can't he be tinkering? can't we be tinkering? can't you be tinkering? can't they be tinkering?
Perfecto
can't I have tinkered? can't you have tinkered? can't he have tinkered? can't we have tinkered? can't you have tinkered? can't they have tinkered?
Perfecto con V-ing
can't I have been tinkering? can't you have been tinkering? can't he have been tinkering? can't we have been tinkering? can't you have been tinkering? can't they have been tinkering?