1: (0 1 10)

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

2: (7 10 20)

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

3: (6 12 9)

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

4: (1 19 10)

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