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

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

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

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

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