1: (0 1 15)

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

2: (4 15 21)

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

3: (3 19 6)

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

4: (1 20 15)

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