>>> from frase import transforma

--ini-enunciat

>>> f1 = iter('LA IMATGE DE LA DEESSA ERA MASSA CARA'.split())
>>> f2 = transforma(f1)
>>> next(f2)
'LR'
>>> next(f2)
'IMRTGS'
>>> for p in f2:
...    print(p, end='-')
DS-LR-SRR-MRSSR-

--fi-enunciat

>>> for p in transforma(iter('ARA LA PESSETA ES RARA'.split())):
...    print(p, end='-')
LR-SS-

>>> for p in transforma(iter('EL VAIXELL DE VELA VOLA SOBRE EL MAR'.split())):
...    print(p, end='-')
SL-VRIXSLL-DS-VSLR-VOLR-SOBRS-SL-MRR-

>>> import itertools
>>> f1 = itertools.cycle(['BARRA', 'LLIURE', 'VESSA', 'AIGUA'])
>>> f2 = transforma(f1)
>>> for x in range(10000):
...     a = next(f2)
>>> for x in range(10):
...     print(next(f2), end='-')
LLIURS-RIGUR-LLIURS-RIGUR-LLIURS-RIGUR-LLIURS-RIGUR-LLIURS-RIGUR-