[rasdf]

The problem is, if I have a 5-letter string of characters (h., k. or kanji) let's say:

abcde

...the possibilities are many.
It may represent: 5 (one-letter words) + 1 (5-letter word) + 1 ("ab") + 1 ("bc") +1 ("cd") +1 ("de") + 1 ("abc") +1 ("bcd") +1 ("cde") + 1 ("abcd") + 1 ("bcde") = 11 entries I have to search in the dictionary.

Anyway, Thanks for the answers.