What is the meaning of Escape_sequence?

5-letter words containing

• 5-letter words containing i

• 5-letter words containing r

• 5-letter words containing e

• 5-letter words containing k

• 5-letter words containing f

5-letter words starting with

• 5-letter words starting with g

• 5-letter words starting with m

• 5-letter words starting with f

• 5-letter words starting with i

• 5-letter words starting with l

5-letter words in the middle

• 5-letter words in the middle i

• 5-letter words in the middle l

• 5-letter words in the middle d

• 5-letter words in the middle i

• 5-letter words in the middle c

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with u

• 5-letter words ending with e

• 5-letter words ending with n

• 5-letter words ending with l

5-letter words excluding

• 5-letter words excluding g

• 5-letter words excluding f

• 5-letter words excluding r

• 5-letter words excluding o

• 5-letter words excluding e