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