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

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

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

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

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