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