1: (0 3 5)

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

2: (6 9 21)

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

3: (4 11 7)

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

4: (3 16 9)

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