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

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

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

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

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