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

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

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

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

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