1: (0 1 15)

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

2: (4 15 21)

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

3: (3 17 6)

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

4: (1 20 15)

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