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

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

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

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

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