siedzcej
Siedzcej is not a standard Polish word. It does not appear in major Polish dictionaries and is generally regarded as a misspelling or a nonstandard form rather than a recognized lexical item. When encountered, it is usually the result of a typographical error or a confusion between different morphological patterns derived from the verb siedzieć (to sit) and its participles.
Possible sources of confusion include mistaking the infinitive or present participle patterns for a supposed form
In usage, siedzcej has no defined grammatical function in standard Polish. It is not used in formal
For readers and writers, the recommended approach is to avoid siedzcej and instead use the standard forms