The existence of a dependent subject form is very certain: 3SG a vs. independent hem occurring as emphatic subject, co-referential subject, object.
2SG jie may be a dependent variant of yu; attested as subject in one source.
Writing as one word sometimes seems to indicate dependency. E.g., when followed by no, the sequence is sometimes written as one word, not only with a=no [3SG.SBJ=NEG], but also with mi=no [1SG=NEG] (Van Dyk c1765). At least once, 1SG mi is written together with the verb it is the object of.
By contrast, dependent object pronouns are uncertain. Attested as indirect object: 2SG -u (vs. yu) dependent indirect object of gi 'give' (not attested with other verbs).
Perhaps reduced variants of pronouns did occur as dependent direct object but were not differentiated from the full forms in the writing.
See Examples & Comments.
Source: van Dyk ca. 1765: 101
Source: Schumann 1783: 65
Source: Schumann 1783: 65
Source: van Dyk ca. 1765: 47
Source: Herlein 1718: 121
Source: Schumann 1783: 119
Source: Schumann 1781: 264
Source: van Dyk ca. 1765: 30
Source: Schumann 1783: 64
Source: Schumann 1781: 61
Source: van Dyk ca. 1765: 95