There’s definitely going to be a better way than my way of getting all the words that can be written with the left side of the keyboard
http://tech.slashdot.org/article.pl?sid=08/11/20/2238254
for i in `tr '[:upper:]' '[:lower:]' < words | egrep -v "[polikmujnyh]"`; do echo -n $i; echo -n $i | wc -c; done | awk '{ print $2, $1 }' | sort -n
Still, tesseradecade, devertebrated and aftercataract. According to wiktionary I can even have tesseradecades
Left side of keyboard (12 letters or more):
12 gazetteerage 12 reasseverate 12 terracewards 12 tessaradecad 13 aftercataract 13 devertebrated 13 tesseradecade
Right side of keyboard (10 letters or more):
10 plynlymmon 10 polyphylly 11 hypolimnion 11 hypophyllum 11 polyphonium 12 hypophyllium 12 miminypiminy 13 phyllophyllin