Correct

里三层,外三层

/ lǐ sān céng, wài sān céng /
Strokes

Example

Definition

layer upon layer―crowds of people

1
Rénmen
人们
shòupiàochù
售票处
wéi
le
sān
céng
,
wài
sān
céng
,
zhēngxiāng
争相
gòumǎi
购买
yīnyuèhuì
音乐会
ménpiào
门票

A huge crowd gathered at the box office,competing for a ticket for the oncoming concert.