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

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

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

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

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