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