Answer:
They all look the same when reflected in a mirror!
苦 KU, kuru(shimu), niga(i) - suffer, bitter
因 IN, yo(ru) - depend on, be limited to
困 KON, koma(ru) - be distressed, trouble
士 SHI - samurai, man, scholar
干 KAN, hi(ru), ho(su) - get dry, dry, drink up