(0 20 4)(1 16 2)(3 7 5)(6 18 13 11 8)(9 17 15 12 10)(14 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 1 4)
(0)(1 20 4 16 2)(3 7 5)(6 18 13 11 8)(9 17 15 12 10)(14 21 19)
2: (4 16 20)
(0)(1 20 2)(3 7 5)(4)(6 18 13 11 8)(9 17 15 12 10)(14 21 19)(16)
3: (14 21 19)
(0)(1 20 2)(3 7 5)(4)(6 18 13 11 8)(9 17 15 12 10)(14)(16)(19)(21)
4: (12 17 15)
(0)(1 20 2)(3 7 5)(4)(6 18 13 11 8)(9 17 10)(12)(14)(15)(16)(19)(21)