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

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

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

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

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