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

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

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

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

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