arribéarribastearribóarribamosarribasteisarribaron
The sequence "arribé, arribaste, arribó, arribamos, arribasteis, arribaron" represents the preterite (past simple) indicative conjugations of the Spanish verb "arribar" for the first, second, and third person singular and plural. "Arribar" is a verb that means to arrive, to reach, or to dock, often used in contexts of travel, especially by sea or air.
The forms provided cover all possible subjects in the past tense. "Arribé" is the first-person singular form,