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