What is the meaning of Structural_pattern?

5-letter words containing

• 5-letter words containing m

• 5-letter words containing e

• 5-letter words containing l

• 5-letter words containing i

• 5-letter words containing s

5-letter words starting with

• 5-letter words starting with o

• 5-letter words starting with p

• 5-letter words starting with o

• 5-letter words starting with t

• 5-letter words starting with e

5-letter words in the middle

• 5-letter words in the middle o

• 5-letter words in the middle a

• 5-letter words in the middle n

• 5-letter words in the middle e

• 5-letter words in the middle t

5-letter words ending with

• 5-letter words ending with e

• 5-letter words ending with l

• 5-letter words ending with u

• 5-letter words ending with i

• 5-letter words ending with g

5-letter words excluding

• 5-letter words excluding o

• 5-letter words excluding c

• 5-letter words excluding m

• 5-letter words excluding r

• 5-letter words excluding c