What is the meaning of Negligible_set?

5-letter words containing

• 5-letter words containing i

• 5-letter words containing g

• 5-letter words containing r

• 5-letter words containing n

• 5-letter words containing k

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with g

• 5-letter words starting with l

• 5-letter words starting with l

• 5-letter words starting with t

5-letter words in the middle

• 5-letter words in the middle i

• 5-letter words in the middle t

• 5-letter words in the middle i

• 5-letter words in the middle m

• 5-letter words in the middle d

5-letter words ending with

• 5-letter words ending with h

• 5-letter words ending with s

• 5-letter words ending with g

• 5-letter words ending with l

• 5-letter words ending with c

5-letter words excluding

• 5-letter words excluding a

• 5-letter words excluding c

• 5-letter words excluding r

• 5-letter words excluding e

• 5-letter words excluding v