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

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

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

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

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