2 a-so = yaso, eighty, i.e. indefinite number.
17 May be an error for asobahi. There is, however, a word sobafu, trifle, play.
For yasoshimano see List m. k.
140
Ohokimi no 1
mikoto kashikomi
miredo akanu
Nara yama koyete
maki tsumu 5
Idzumi no kaha no