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

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

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

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

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