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