I can estimate you can estimate he can estimate we can estimate you can estimate they can estimate
Forma con V-ing
I can be estimating you can be estimating he can be estimating we can be estimating you can be estimating they can be estimating
Perfecto
I can have estimated you can have estimated he can have estimated we can have estimated you can have estimated they can have estimated
Perfecto con V-ing
I can have been estimating you can have been estimating he can have been estimating we can have been estimating you can have been estimating they can have been estimating
Negación
Forma simple
I can't estimate you can't estimate he can't estimate we can't estimate you can't estimate they can't estimate
Forma con V-ing
I can't be estimating you can't be estimating he can't be estimating we can't be estimating you can't be estimating they can't be estimating
Perfecto
I can't have estimated you can't have estimated he can't have estimated we can't have estimated you can't have estimated they can't have estimated
Perfecto con V-ing
I can't have been estimating you can't have been estimating he can't have been estimating we can't have been estimating you can't have been estimating they can't have been estimating
Forma interrogativa
Forma simple
can I estimate? can you estimate? can he estimate? can we estimate? can you estimate? can they estimate?
Forma con V-ing
can I be estimating? can you be estimating? can he be estimating? can we be estimating? can you be estimating? can they be estimating?
Perfecto
can I have estimated? can you have estimated? can he have estimated? can we have estimated? can you have estimated? can they have estimated?
Perfecto con V-ing
can I have been estimating? can you have been estimating? can he have been estimating? can we have been estimating? can you have been estimating? can they have been estimating?
Forma interro-negativa
Forma simple
can't I estimate? can't you estimate? can't he estimate? can't we estimate? can't you estimate? can't they estimate?
Forma con V-ing
can't I be estimating? can't you be estimating? can't he be estimating? can't we be estimating? can't you be estimating? can't they be estimating?
Perfecto
can't I have estimated? can't you have estimated? can't he have estimated? can't we have estimated? can't you have estimated? can't they have estimated?
Perfecto con V-ing
can't I have been estimating? can't you have been estimating? can't he have been estimating? can't we have been estimating? can't you have been estimating? can't they have been estimating?