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

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

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

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

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