5 10 8 - 8,9,10 8-10 - 4,5,6,7,8,9 7-9 b 2,3,4,5 5-8 ab 1 0 a 1,2,3,6,7,10 5 11 1 - 8,9,10,11 2 - 4,5,6,7,8,9 3 b 2,3,4,5 4 ab 1 0 a 1,2,3,6,7,10,11