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

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

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

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

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