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