(0 18 1)(2 20 4)(3 22 7)(5 23 8)(6 11 9)(10 14 12)(13 17 15)(16 21 19)
ALLOWS (11/8)-SEQUENCE
1: (4 17 20)
(0 18 1)(2 20 15 13 17)(3 22 7)(4)(5 23 8)(6 11 9)(10 14 12)(16 21 19)
2: (16 21 19)
(0 18 1)(2 20 15 13 17)(3 22 7)(4)(5 23 8)(6 11 9)(10 14 12)(16)(19)(21)
3: (2 20 15)
(0 18 1)(2 13 17)(3 22 7)(4)(5 23 8)(6 11 9)(10 14 12)(15)(16)(19)(20)(21)
4: (3 22 7)
(0 18 1)(2 13 17)(3)(4)(5 23 8)(6 11 9)(7)(10 14 12)(15)(16)(19)(20)(21)(22)