1: (0 3 5)

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

2: (2 9 4)

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

3: (1 20 5)

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

4: (3 15 6)

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