0-1 parallel: items: "00"
1-2 parallel: items: "01"
2-3 parallel: items: "02"
3-4 parallel: items: "03"
4-5 parallel: items: "04"
5-6 parallel: items: "05"
6-7 parallel: items: "06"
7-8 parallel: items: "07"
8-9 parallel: items: "08"