What is the meaning of Case_insensitive?

5-letter words containing

• 5-letter words containing e

• 5-letter words containing a

• 5-letter words containing o

• 5-letter words containing n

• 5-letter words containing t

5-letter words starting with

• 5-letter words starting with e

• 5-letter words starting with a

• 5-letter words starting with f

• 5-letter words starting with i

• 5-letter words starting with a

5-letter words in the middle

• 5-letter words in the middle w

• 5-letter words in the middle i

• 5-letter words in the middle a

• 5-letter words in the middle c

• 5-letter words in the middle c

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with r

• 5-letter words ending with l

• 5-letter words ending with c

• 5-letter words ending with i

5-letter words excluding

• 5-letter words excluding l

• 5-letter words excluding i

• 5-letter words excluding s

• 5-letter words excluding i

• 5-letter words excluding r