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

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

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

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

(0 12 4)(1)(2)(3 8 6)(5 18 16)(7 14 9)(10 17 15)(11)(13)(19)(20)(21)