>>> from tauler import TaulerSE
>>> from iserps import iter_serps

>>> t = TaulerSE(34)
>>> t.afegir_serp(33, 10)
>>> t.afegir_serp(30, 17)
>>> t.afegir_serp(14, 5)

>>> it = iter_serps(t)
>>> for tup in it:
...     print(tup)
(14, 5)
(30, 17)
(33, 10)
>>> next(it, 'final')
'final'

>>> t.afegir_serp(23, 10)
>>> for tup in iter_serps(t):
...     print(tup)
(14, 5)
(23, 10)
(30, 17)
(33, 10)