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