sentences:  Each day of the week has a distinct theme for which hymns in each tone are found in the texts of the Octoechos.During this period, the Octoechos is not sung on weekdays and it is furthermore not sung on Sundays from Palm Sunday through the Sunday of All Saints.After Pentecost, the singing of the Great Octoechos on weekdays continued until Saturday of Meatfare Week, on Sundays there was another cycle organised by the eleven "heothina" with their "exaposteilaria" and their "theotokia".