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

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

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

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

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