CREATE TABLE words2
(
    word VARCHAR2(60)
)
TABLESPACE data_ts;

--load the wordlist using your favorite tool, I used Toad Import wizard

CREATE TABLE words
TABLESPACE data_ts
AS
    SELECT DISTINCT UPPER(word) word
      FROM words2
     WHERE REGEXP_LIKE(word, '^[a-zA-Z]{2,8}$') -- only letters play, no numbers or special characters
       AND MOD(LENGTH(word), 2) = 0; -- we only need word lengths that are divisible by 2

DROP TABLE words2 PURGE;