What is the meaning of Test_pattern?

5-letter words containing

• 5-letter words containing e

• 5-letter words containing h

• 5-letter words containing n

• 5-letter words containing a

• 5-letter words containing a

5-letter words starting with

• 5-letter words starting with n

• 5-letter words starting with c

• 5-letter words starting with a

• 5-letter words starting with a

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle e

• 5-letter words in the middle p

• 5-letter words in the middle a

• 5-letter words in the middle a

• 5-letter words in the middle i

5-letter words ending with

• 5-letter words ending with p

• 5-letter words ending with l

• 5-letter words ending with a

• 5-letter words ending with i

• 5-letter words ending with e

5-letter words excluding

• 5-letter words excluding a

• 5-letter words excluding m

• 5-letter words excluding y

• 5-letter words excluding k

• 5-letter words excluding d