An user Galician
says…

E
Coordinating conjunction
  así
Adverb
  debeu
Verb
  ser
Auxiliary
  ó
  primeiro
1st
Adjective
.

It must have been the first one.
Words and sentences
New
E

leste (east)

New
así

so, thus

New
debeu

third-person singular preterite indicative of deber

New
ser

New
ó

Alternative spelling of ao

1st
New
primeiro

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