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