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

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

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

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

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