I can mast you can mast she can mast we can mast you can mast they can mast
Forma con V-ing
I can be masting you can be masting she can be masting we can be masting you can be masting they can be masting
Perfecto
I can have masted you can have masted she can have masted we can have masted you can have masted they can have masted
Perfecto con V-ing
I can have been masting you can have been masting she can have been masting we can have been masting you can have been masting they can have been masting
Negación
Forma simple
I can't mast you can't mast she can't mast we can't mast you can't mast they can't mast
Forma con V-ing
I can't be masting you can't be masting she can't be masting we can't be masting you can't be masting they can't be masting
Perfecto
I can't have masted you can't have masted she can't have masted we can't have masted you can't have masted they can't have masted
Perfecto con V-ing
I can't have been masting you can't have been masting she can't have been masting we can't have been masting you can't have been masting they can't have been masting
Forma interrogativa
Forma simple
can I mast? can you mast? can she mast? can we mast? can you mast? can they mast?
Forma con V-ing
can I be masting? can you be masting? can she be masting? can we be masting? can you be masting? can they be masting?
Perfecto
can I have masted? can you have masted? can she have masted? can we have masted? can you have masted? can they have masted?
Perfecto con V-ing
can I have been masting? can you have been masting? can she have been masting? can we have been masting? can you have been masting? can they have been masting?
Forma interro-negativa
Forma simple
can't I mast? can't you mast? can't she mast? can't we mast? can't you mast? can't they mast?
Forma con V-ing
can't I be masting? can't you be masting? can't she be masting? can't we be masting? can't you be masting? can't they be masting?
Perfecto
can't I have masted? can't you have masted? can't she have masted? can't we have masted? can't you have masted? can't they have masted?
Perfecto con V-ing
can't I have been masting? can't you have been masting? can't she have been masting? can't we have been masting? can't you have been masting? can't they have been masting?