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

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

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

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

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