>>> from adn import fusiona

>>> it = fusiona('ACCTGAG','ACGTATG')

>>> iter(it) is it
True

>>> next(it)
'A'
>>> next(it)
'C'
>>> for x in it:
...     print(x, end="/")
*/T/*/*/G/
>>> next(it)
Traceback (most recent call last):
  ...
StopIteration


>>> from adn import sense_asteriscs

>>> it = sense_asteriscs('GATT*GAT***AG*G*TCA*')

>>> iter(it) is it
True

>>> next(it)
'G'
>>> next(it)
'A'
>>> for x in it:
...     print(x, end="/")
T/T/G/A/T/A/G/G/T/C/A/
>>> next(it)
Traceback (most recent call last):
  ...
StopIteration

>>> from adn import iter_a_cadena

>>> it = iter('DESOXIRIBONUCLEIC')
>>> iter_a_cadena(it)
'DESOXIRIBONUCLEIC'
>>> it = iter(['A','B','C','D'])
>>> iter_a_cadena(it)
'ABCD'
>>> next(it)
Traceback (most recent call last):
  ...
StopIteration


>>> from adn import dues_cadenes

>>> dues_cadenes('ATACA','ACATA')
('A*A*A', 'AAA')