1: (0 1 16)

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

2: (4 16 21)

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

3: (2 19 7)

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

4: (3 8 5)

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