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

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

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

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

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