Wrong structure with many "-"

[wellington36]

On dev branch we have a problem with structure with many symbols '-' (no valid this structure):

# sent_id = 802
# text = Xe muhu imumeʔuhaw aʔe .
# text_port = Esta é a estória do muçum . (Gomes, 1988)
# text_spa = Esta es la historia del Mussum.
# text_eng = This is the story of the mussum.
# PART S V PART
1   Xe  xe  PART    pcl Speech=MM   3   discourse   _   _
2   muhu    muhu    NOUN    n   _   3   nmod    _   _
3   imumeʔuhaw  mumeʔu  NOUN    n   Nomzr=Circ|Rel=NCont    0   root    _   _
4   aʔe aʔe PRON    pro PronType=Dem    3   discourse   _   _
5   .   .   PUNCT   punct   _   3   punct   _   _
----------------------------------------
# sent_id = 803
# text = Nezewe muhu hekohaw aʔe wa no .
# text_port = Assim é a vida dele . (Gomes, 1988)
# text_spa = Esta es su vida.
# text_eng = This is his life.
# ADV S V PART
1   Nezewe  nezewe  ADV adv _   3   advmod  _   _
2   muhu    muhu    NOUN    n   _   3   obl:subj    _   _
3   hekohaw eko NOUN    n   Nomzr=Circ|Rel=NCont    0   root    _   _
4   aʔe aʔe PRON    pro PronType=Dem    3   discourse   _   _
5   wa  wa  PART    pcl Number=Plur 3   discourse   _   _
6   no  no  PART    pcl _   3   discourse   _   _
7   .   .   PUNCT   punct   _   3   punct   _   _

[wellington36]

Solved in 5b9d66a05a4464218da6d584b6415c7a731c9dc8.