There is a two-way contrast: dis 'this' - dis-ya 'this very' - da(t) 'that' - dat-de 'that very'. The emphatic demonstratives can be used discontinually. However, the preverbal variant (e.g. disya hous, datde hous) are preferred and while the discontinual variant dat ... de sounds naturalistic according to native speakers, the discontinual variant dis ... ya does not, although they admit it is grammatical.
Source: Bartens 2003: 60
Source: Bartens 2003: 48
Source: Bartens 2003: 60