1: (0 1 4)

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

2: (4 10 20)

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

3: (2 17 7)

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

4: (6 12 8)

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