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

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

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

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

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