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

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

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

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

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