But “sewergems” reversed = “smeg rewes” → sounds like “smeg” and “rewes” maybe "smeg" (from Red Dwarf) and "rewes" → "sewer" backwards.
thmyl → mythl (no) brnamj → jambrn (no) sewergems → smegrewes (no) alkrak → karkla Given the lack of obvious pattern, a likely intent is just : thmyl brnamj sewergems m alkrak
“alkrak” reversed “karkla” → maybe “karkla” = “karkla” nothing. But “sewergems” reversed = “smeg rewes” → sounds