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