90. What do these characters have in common? - Hint; It's in how they see themselves! 喜 冊 並 普 霊

Answer: 

喜  KI, yoroko(bu) - be glad

冊  SATSU, SAKU - counter for books

並  HEI, nara(bu), nara(beru) - line up, arrange, ordinary

普  FU - general, universal

霊  REI, RYOU, tama - soul, spirit

When they look in a mirror, they only see themselves! They are all symmetrical!