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

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

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

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

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