---------------------------------------------------------------------------------------------
Output for  sample-e
---------------------------------------------------------------------------------------------
('total number of words=', 17)
('total number of distinct words=', 7)
('popular_threshold_word=', 1.0)
('common_threshold_l_word=', 3.0)
('common_threshold_u_word=', 4.0)
('rare_threshold_word=', 6.0)
---------------------------------------------------------------------------------------------

Popular Words
+----+----+---------+
|Rank|Word|Frequency|
+----+----+---------+
|1   |ab  |7        |
+----+----+---------+

Common Word
+----+----+---------+
|Rank|Word|Frequency|
+----+----+---------+
|3   |abcd|2        |
|4   |qqq |2        |
+----+----+---------+

Rare Words
+----+----+---------+
|Rank|Word|Frequency|
+----+----+---------+
|6   |q   |1        |
|7   |qq  |1        |
+----+----+---------+

---------------------------------------------------------------------------------------------
('total number of distinct letters=', 11)
('popular_threshold_letter=', 1.0)
('common_threshold_l_letter=', 5.0)
('common_threshold_u_letter=', 6.0)
('rare_threshold_letter=', 10.0)
---------------------------------------------------------------------------------------------

Popular Letters
+----+------+---------+
|Rank|Letter|Frequency|
+----+------+---------+
|1   |b     |13       |
+----+------+---------+

Common Letters
+----+------+---------+
|Rank|Letter|Frequency|
+----+------+---------+
|5   |c     |4        |
|6   |d     |4        |
+----+------+---------+

Rare Letters
+----+------+---------+
|Rank|Letter|Frequency|
+----+------+---------+
|10  |k     |1        |
|11  |r     |1        |
+----+------+---------+

---------------------------------------------------------------------------------------------