1: (0 3 7)

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

2: (5 7 21)

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

3: (4 10 6)

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

4: (3 19 7)

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