1: (0 1 7)

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

2: (4 7 21)

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

3: (2 14 5)

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

4: (1 20 7)

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