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

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

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

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

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