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

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

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

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

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