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

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

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

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

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