0-1 parallel: item: "00"
1-2 parallel: item: "01"
2-3 parallel: item: "02"
3-4 parallel: item: "03"
4-5 parallel: item: "04"
5-6 parallel: item: "05"
6-7 parallel: item: "06"
7-8 parallel: item: "07"
8-9 parallel: item: "08"
9-10 parallel: item: "09"