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

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

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

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

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