eu montei

assembled, put together, set up, established

→ montar
mont to assemble, to put together, to set up + ei I-form of the simple past
verb · 1st-person singular, past tense Rare #41,158
assembled, put together Past-tense form of montar.
PO: Montei a mesa sozinho.
EN: I assembled the table by myself.
set up, established Past-tense form of montar.
PO: Montei um pequeno negócio em casa.
EN: I set up a small business at home.
Conjugation of montar
Indicative past
SingularPlural
First montei montamos
Third montou montaram

E por fim montei um lar respeitável.

And finally, I built a respectable home.

— Tampopo (1985)

Deixa, que eu montei o canal lá embaixo.

Never mind, I set up the channel down there.

— Bicho de Sete Cabeças (2001)

Montei uma grande agenda que eu poderia te dar.

I put together a great agenda that I could give you.

— Mommy (2014)

Eu montei isso.

I put this together.