(0 19 1)(2 7 5)(3 18 16)(4 17 10)(6 11 8)(9 14 12)(13 20 15)
ALLOWS (11/8)-SEQUENCE
1: (4 7 10)

(0 19 1)(2 7 17 10 5)(3 18 16)(4)(6 11 8)(9 14 12)(13 20 15)
2: (2 7 5)

(0 19 1)(2)(3 18 16)(4)(5 17 10)(6 11 8)(7)(9 14 12)(13 20 15)
3: (6 11 8)

(0 19 1)(2)(3 18 16)(4)(5 17 10)(6)(7)(8)(9 14 12)(11)(13 20 15)
4: (5 17 10)

(0 19 1)(2)(3 18 16)(4)(5)(6)(7)(8)(9 14 12)(10)(11)(13 20 15)(17)