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

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

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

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

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