Remember that the past participles of regular verbs end in -ado (for -ar verbs) and -ido (for -er/-ir verbs), as in:
viajar(to travel) → viajado(traveled)
viver(to live) → vivido(lived)
There are also some verbs with irregular past participles, such as escrever(to write) → escrito(written). If you need a quick refresher about past participle verbs in Brazilian Portuguese, check this Brazilian Portuguese past participle reference sheet.