On the first festival day of Succos there were thirteen bullocks, two rams, and one he-goat; there remained fourteen yearling sheep for eight watches.  On the first day six [of the watches] offered up two each, and the rest [offered] one each. On the second [day] five offered up two each, and the rest one each. On the third [day] four offered up two each, and the rest one each. On the fourth [day] three offered up two each, and the rest one each. On the fifth [day] two offered up two each, and the rest one each. On the sixth [day] one offered up two, and the rest, one each. On the seventh [day] all were equal.  On the eighth [day] they reverted to [casting] lots as on the [other] festivals.  [The Sages] said, “Whoever offered up bullocks today should not offer them tomorrow”; but they took turns in rotation.