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