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

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

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

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

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