They [then] began to pray.  They send before the Ark a well-versed elder, who has children and whose house is empty, so that his heart should be fully [devoted] in prayer. He recites before them twenty-four blessings: the eighteen which are [recited] every day, and six more which are added.

And they are as follows: Zichronos, Shofaros; To Hashem in my distress I called and He answered me; I shall lift my eyes to the mountains etc.; From the depths have I called You, Hashem; A prayer of the afflicted when he faints.  R' Yehudah says: He was not obligated to say Zichronos and Shofaros. But in their place he says: If there be a famine in the land, if there be a pestilence etc.; and The word of Hashem which came to Jeremiah regarding the droughts. He then says their [proper] endings.