De or het weefselmonster?

The correct Dutch article is:

de weefselmonster

How to use weefselmonster

the weefselmonsterde weefselmonster
this weefselmonsterdeze weefselmonster
that weefselmonsterdie weefselmonster
our weefselmonsteronze weefselmonster
your weefselmonsterjouw weefselmonster
every weefselmonsterelke weefselmonster
which weefselmonster?welke weefselmonster?
a big weefselmonster / the big weefselmonstereen grote weefselmonster, de grote weefselmonster