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Ordinal Numbers

ordinal numbers from 1 to 15

primer/primero, primera, primeros, primeras
segundo, segunda, segundos, segundas
tercer/tercero, tercera, terceros, terceras
cuarto, cuarta, cuartos, cuartas
quinto, quinta, quintos, quintas
sexto, sexta, sextos, sextas
séptimo, séptima, séptimos, séptimas
octavo, octava, octavos, octavas
noveno, novena, novenos, novenas
10º décimo, décima, décimos, décimas
11º onceavo/undécimo/décimo primer(o)...
12º doceavo/duodécimo/décimo segundo...
13º treceavo/décimo tercer(o)...
14º catorceavo/décimo cuarto...
15º quinceavo/décimo quinto...