While Using the copula だ, you'll be able to technically try this much too, but だ is unconventional in that it cannot be put in front of something else as だ, so it finally ends up transforming variety in the procedure: なお、次のような語については、現代語の意識では一般に二語に分解しにくいもの等として、それぞれ「じ」「ず」を用いて書くことを本則とし、「せかいぢゅう」「いなづま」のよう... https://feb.upstegal.ac.id/?ekonomi=MITRA138