1: (0 1 4)

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

2: (4 10 20)

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

3: (3 17 9)

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

4: (16 21 19)

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