I posted some stats on this not long ago on the Chat page, but I it's disappeared now. Luckily I copied it down, so I'll post it here again.
The following figures are based on search results using
http://www.jisho.org
Number without brackets = 'all words (no matter how rare or archaic)'.
Number inside brackets = 'commonly used words only'.
-Words spelt with HIRAGANA(/kanji)-
ji: *じ* = 21179 (1860), *ぢ* = 116 (10)
ja: *じゃ* = 1065 (93), *ぢゃ* = 14 (0)
ju: *じゅ* = 3649 (360), *ぢゅ* = 12 (0)
jo: *じょ* = 4596 (419), *ぢょ* = 10 (0)
zu: *ず* = 4722 (345), *づ* = 1368 (74)
-Words spelt with KATAKANA-
ji: *ジ* = 3845 (279), *ヂ* = 9 (0)
ja: *ジャ* = 541 (52), *ヂャ* = 0 (-)
ju: *ジュ* = 264 (25), *ヂュ* = 0 (-)
jo: *ジョ* = 268 (20), *ヂョ* = 0 (-)
zu: *ズ* = 1493 (130), *ヅ* = 22 (0)
As you can see, the katakana ヂャ, ヂュ and ヂョ aren't used in ANY words in their dictionary. The hiragana versions of these (ぢゃ, ぢゅ and ぢょ) are used in a very small number of words, but none of them are common words! And the katakana ヂ and ヅ aren't used in any common words either!!
To do these searches yourself on
http://www.jisho.org , just type the kana you want to search in the "Japanese" text box. However, make sure to put an asterisk on both sides of the kana -- this is to make it search for the character at any of position in the word (beginning, end or somewhere in the middle). ^^
August 28, 2014 at 8:02am