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

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

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

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

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