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

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

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

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

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