Only one noun was attested for which a plural form exists: innuk 'man' vs. innuit 'men' (both forms originate from Eskimo proper). Use of the plural is not consistent. In addition, the second person pronoun has a singular form: ilipsi 'you (PL/SG)' vs. illuit 'you (SG)' (again, both forms originate from Eskimo proper).
Source: Stefánsson 1909: 230
Source: Stefánsson 1909: 222
Source: Stefánsson 1909: 225
Source: Stefánsson 1909: 225