From Wiktionary, the free dictionary
Instrumental case form of siulleq.
siullermik
- first, the first time
1992, “Meeqqakka”, in Atuagagdliutit/Grønlandsposten:Nuliaralu siullermik ernertaarpugut, ukiut marluk qaangiummata panmissaarluta,[sic – meaning panissaarluta] sulilu ukiut marluk qaangiuteqqimmata panissaaqqilluta.- My wife and I first had a son, two years later a daughter, and another two years after that, another daughter.