1: (0 1 7)

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

2: (4 7 20)

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

3: (2 17 5)

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

4: (16 21 19)

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