explanation of the absurdity and evil of a case system

take (wh)-o -at -ose -om -ere, (tw)-ain -ain's, (th)-ey -eirs -em,

take some

it gives >> 

somo somat somose somom somere, somain somains, somey someirs somem

(common nominative, neuter, genitive, c. accusative, n. locative, dual, du. gen., plural, pl. gen., pl. oblique) 
(the wikipedia article "grammatical case" is fake news, as agglutinative systems are regular and completely unlike indo-european fusion, mainly holding out only in baltic, slavic and icelandic!)