Prefix Trees

• Sort (plain): Sort the letters of the word according to (plain) sort order, where "a" is before "b" etc. After this sorting, the prefixes is created.
• Reverse: Before creating the prefixes, reverse the letters. Note: If the option Sort (plain) also is checked, it first sort and the reverse the letters.
• Sort by letter frequency: Before creating the prefixes, sort the word according to the frequencies of the letters (of all words). This means that the least common letter is before more common letters.
• Use 100 random words: Instead of using the words in the word list, use 100 random words. Note: It you want to play with the words, please uncheck this checkbox, otherwise it will generate 100 new words.