Dictionary - searching for different word forms

[lvu]

Now, if I have some word on the current page in plural, or in past tense, I can't find it in the dictionary. It should be possible to add an ability to try some pattern-based modifications of the word, if the original word can't be found in the dictionary. If using regexps then for English language these patterns could look like this: s/(.*)s$/\1/ s/(.*)es$/\1/ s/(.*)ies$/\1y/ s/(.*)d$/\1/ s/(.*)ed$/\1/ and so on. Later, some pattern files for different languages can be preinstalled in the firmware.