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