1: (0 8 17)

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

2: (4 20 10)

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

3: (2 8 6)

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

4: (1 5 3)

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