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

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

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

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

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