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

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

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

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

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