as

• Article

  feminine plural of o

• Pron
• Noun

três

• Num

  three (cardinal number 3)

• Adj
• Noun

garotas

plural of garota

estão

third-person plural present indicative of estar

sentadas

• Adj

  feminine plural of sentado

• Noun
• Verb

no

• Contraction

  Contraction of em o (“in the, on the”).

• Pron

set

set (group of things in maths, tennis, cinema, etc.)