(0 19 2)(1 9 3)(4 20 6)(5 10 7)(8 18 17 15 11)(12 16 13 21 14)
ALLOWS (11/8)-SEQUENCE
1: (0 15 18)
(0 17 15 19 2)(1 9 3)(4 20 6)(5 10 7)(8 18 11)(12 16 13 21 14)
2: (13 21 16)
(0 17 15 19 2)(1 9 3)(4 20 6)(5 10 7)(8 18 11)(12 16 14)(13)(21)
3: (2 15 19)
(0 17 15)(1 9 3)(2)(4 20 6)(5 10 7)(8 18 11)(12 16 14)(13)(19)(21)
4: (12 16 14)
(0 17 15)(1 9 3)(2)(4 20 6)(5 10 7)(8 18 11)(12)(13)(14)(16)(19)(21)