Inserted key: '123'.
Inserted key: '1231'.
Inserted key: '1232'.
Inserted key: '1233'.
Inserted key: '1234'.
Inserted key: '1235'.
Finding subtrie for prefix '123' ... (found)
Trie's prefix: '123'.
Going to first symbol ...  ok.
Current exist? yes.
Current symbol '1'.
Current trie's prefix '1231'.
Going to next symbol ...  ok.
Current exist? yes.
Current symbol '2'.
Current trie's prefix '1232'.
Going to next symbol ...  ok.
Current exist? yes.
Current symbol '3'.
Current trie's prefix '1233'.
Going to next symbol ...  ok.
Current exist? yes.
Current symbol '4'.
Current trie's prefix '1234'.
Going to next symbol ...  ok.
Current exist? yes.
Current symbol '5'.
Current trie's prefix '1235'.
Going to next symbol ...  ok.
Current exist? no.