#ひらがなの番号を得る
def searchkana(s)
	c=splitString("あいうえおかがきぎくぐけげこごさざしじすずせぜそぞただちぢっつづてでとどなにぬねのはばぱひびぴふぶぷへべぺほぼぽまみむめもゃやゅゆょよらりるれろわをん", "")
    left = 0
    right = 74
    while left < right
    	speak("left:" + toString(left))
    	speak("mid:" + toString(mid))
    	speak("right:" + toString(right))
        mid = floor((left + right) / 2)
        if c[mid] == s
        	left=mid
        	right=mid
        elsif s < c[mid]
            right= mid-1
        else
            left=mid +1
        end
    end
	return left
end