1: (0 3 12)

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

2: (2 19 4)

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

3: (1 20 17)

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

4: (3 14 5)

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