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

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

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

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

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