Northern Thedish is highly grammatically divergent from Standard Thedish. It uses many inflectional forms and isoglosses that were lost in Standard Thedish.

san (< sá yn) = "some specific"

Schleicher

A száp jáne vóler sú sane ruse: yn at tiúch a kóre vage, yn at biar ne móre lost, ok yn at snióm biar a mánьsk. Þe száp sáz ta þí rusen