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

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

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

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

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