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