1: (0 1 5)

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

2: (1 5 15)

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

3: (5 15 20)

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

4: (11 21 19)

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