accesskey attribute values from 425K pages (http://philip.html5.org/data/dotbot-20090424.txt),
with count of number of pages each occurs on:

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   5292 p
   3770 r
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   2704 3
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    910 8
    907 k
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    827 a
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    780 n
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    610 m
    480 d
    387 g
    380 w
    347 P
    345 H
    311 R
    303 
    299 C
    283 N
    252 L
    241 U
    238 T
    189 M
    184 E
    183 A
    177 ,
    175 I
    153 B
    147 F
    142 D
    136 G
    101 y
     90 K
     80 O
     80 *
     79 V
     75 -
     73 W
     70 10
     70 #
     68 +
     66 /
     48 .
     44 J
     41 [
     36 accesskeys-breadcrumbs
     36 Z
     36 12
     35 =
     35 11
     32 X
     32 Q
     24 100
     22 accesskeys-tabs
     21 Y
     18 accesskeys-login
     14 13
     11 ?
     11 15
     11 14
     10 none
     10 accesskeys-search
     10 16
      9 17
      8 ]
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      6 Ĺ 
      6 ÄŚ
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      6 >
      5 ü
      5 accesskeys-personalbar
      5 58
      5 26
      5 25
      5 23
      4 help
      4 ak_attach
      4 _
      4 99
      4 22
      4 20
      4 19
      4 1498
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      4 1468
      4  
      3 ll
      3 http://www.swingingheaven.co.uk/spell/spell_checker.php
      3 head1
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      3 30
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      2 ò
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      2 Ä›
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      2 n=9
      2 jt
      2 head3
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      2 accesskeys-užrašai
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      2 /_src_/web/asc/spell_checker.php
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      1 images/9952/Pernykste-ershketroze.thumbnail.jpg
      1 images/9685/upload-9685-1222071578.thumbnail.jpg
      1 images/7973/Picture%201....thumbnail.jpg
      1 images/7763/Naktis%20Nidoj.thumbnail.jpg
      1 images/4792/kan.thumbnail.jpg
      1 images/13339/DSC_3200.thumbnail.jpg
      1 images/13042/_DSC6925-2.thumbnail.jpg
      1 images/12738/%20%D0%B4%D0%B5%D0%B2%D1%83%D1%88%D0%BA%D0%B0%20%D0%A5%D0%B0%D1%80%D1%8C%D0%BA%D0%BE%D0%B2%20%D0%96%D0%B5%D0%BD%D1%8F%202008_08_19%20%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D1%8B%20%D0%BD%D0%B0%20%D0%BA%D0%B0%D0%BF%D0%BE%D1%82%D0%B0%D1%85%20%D1%88%D0%B8%D1%80%D0%B8%D0%BA%20%D1%81%D0%BD%D0%B8%D0%B7%D1%83%20_MG_3084%201000.thumbnail.jpg
      1 images/11946/20080920_0038%2Befoto.thumbnail.jpg
      1 images/11345/N0000068.thumbnail.jpg
      1 images/11345/DSC_1801.thumbnail.jpg
      1 images/11345/DSC_1573_3.thumbnail.jpg
      1 images/11345/DSC_1534.thumbnail.jpg
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      1 images/11238/nid80235kL%60.thumbnail.jpg
      1 images/10920/img425stotisKaune150h700.thumbnail.jpg
      1 head9
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      1 d46f5c33e16b21edb0f1df3793b163a8
      1 c2
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      1 avatarai/picture-9780m.jpg
      1 avatarai/picture-9536m.jpg
      1 avatarai/picture-7973m.jpg
      1 avatarai/picture-7745m.jpg
      1 avatarai/picture-7459m.jpg
      1 avatarai/picture-7243m.jpg
      1 avatarai/picture-6741m.jpg
      1 avatarai/picture-5860m.jpg
      1 avatarai/picture-5826m.jpg
      1 avatarai/picture-5324m.jpg
      1 avatarai/picture-4104m.jpg
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      1 avatarai/picture-13257m.jpg
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      1 avatarai/picture-11345m.jpg
      1 avatarai/picture-11336m.jpg
      1 avatarai/picture-10684m.jpg
      1 avatarai/picture-10022m.jpg
      1 ak_logout
      1 ak_home
      1 accesskeys-Wiki contents
      1 accesskeys-Wiki changes
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      1 accesskeys-History
      1 accesskeys-Backlinks
      1 accesskey-navigation
      1 accesskey portal_tabs
      1 `
      1 ^
      1 \
      1 [§]
      1 Recente
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      1 ENTER
      1 Bewerk
      1 98
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      1 868
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      1 78
      1 757
      1 735f01c19c847398a1a985b3d16e57e8
      1 6be64ec9b540498e00fcf5750fd9334d
      1 5 title=
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      1 1 
      1 0b1892782ed03560d23bd3812ccfbe9f
      1 07
      1 02bbbabee8b3ab736c00b7f6f47749fa
      1 /spellcheck
      1 "0"
      1 <accesskey-n-Alliance-for-Biking-&-Walking>
      1 &return;
      1 

      1  1