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

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

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

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

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