>>> from tauler import TaulerW
>>> from illetres import iter_lletres

>>> t = TaulerW(7, 8)
>>> t.afegir_paraula('CANTADOR')

>>> it = iter_lletres(t)
>>> for tup in it:
...     print(tup)
('A', True)
('B', False)
('C', True)
('D', True)
('E', False)
('F', False)
('G', False)
('H', False)
('I', False)
('J', False)
('K', False)
('L', False)
('M', False)
('N', True)
('O', True)
('P', False)
('Q', False)
('R', True)
('S', False)
('T', True)
('U', False)
('V', False)
('W', False)
('X', False)
('Y', False)
('Z', False)

>>> next(it, 'THEEND')
'THEEND'

>>> t.afegir_paraula('CANTADOR')
>>> t.afegir_paraula('MASSISSA')
>>> t.afegir_paraula('ROSTIDES')
>>> t.afegir_paraula('SORTIDES')
>>> for tup in iter_lletres(t):
...     print(tup, end='-')
('A', True)-('B', False)-('C', True)-('D', True)-('E', True)-('F', False)-('G', False)-('H', False)-('I', True)-('J', False)-('K', False)-('L', False)-('M', True)-('N', True)-('O', True)-('P', False)-('Q', False)-('R', True)-('S', True)-('T', True)-('U', False)-('V', False)-('W', False)-('X', False)-('Y', False)-('Z', False)-