1: (0 1 15)

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

2: (4 15 21)

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

3: (3 19 5)

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

4: (1 20 15)

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