1: (2 9 15)

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

2: (8 20 9)

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

3: (0 19 4)

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

4: (1 16 14)

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