Click Japanese Katakana in sequence. If you missed a symbol, then blink would stop responding.
(Know or already memorized symbols? Then try the phonetic order.)
エE クKU コKO サSA スSU ズZU セSE ソSO ゾZO ドDO ヌNU パPA ヒHI
 ビBI ピPI フHU ブBU ペPE ヤYA リRI ルRU ワWA ヱWE ヴVU ヹVE
  E  KU  KO  SA  SU  ZU  SE  SO  ZO  DO  NU  PA  HI
BI  PI  HU  BU  PE  YA  RI  RU  WA  WE  VU  VE