What is the meaning of Negligible_set?

5-letter words containing

• 5-letter words containing e

• 5-letter words containing c

• 5-letter words containing e

• 5-letter words containing l

• 5-letter words containing r

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with e

• 5-letter words starting with y

• 5-letter words starting with u

• 5-letter words starting with o

5-letter words in the middle

• 5-letter words in the middle a

• 5-letter words in the middle d

• 5-letter words in the middle i

• 5-letter words in the middle l

• 5-letter words in the middle e

5-letter words ending with

• 5-letter words ending with g

• 5-letter words ending with h

• 5-letter words ending with z

• 5-letter words ending with r

• 5-letter words ending with m

5-letter words excluding

• 5-letter words excluding i

• 5-letter words excluding o

• 5-letter words excluding d

• 5-letter words excluding e

• 5-letter words excluding u