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

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

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

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

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