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

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

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

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

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