す可き[subeki] should do (abbr. of suru+beki)
可き[beki] should (suf. to verbs)
もし可能ならば[moshikanounaraba] if possible
可からず[bekarazu] must not
可愛がる[kawaigaru] to love

可愛らしい[kawairashii] lovely
可圧性[kaatsusei] compressibility
可換群[kakangun] Abelian group
可逆[kagyaku] reversible

哀れ[aware] pity
哀れっぽい[awareppoi] plaintive
哀れみ[awaremi] pity
哀れむ[awaremu] to commiserate
哀れ気[awarege] sad

哀音[aion] sad voices
哀歌[aika] lament (song)
哀楽[airaku] grief and pleasure
哀感[aikan] pathos
哀歓[aikan] joys and sorrows