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

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

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

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

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