1: (1 5 9)

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

2: (4 19 6)

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

3: (0 7 2)

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

4: (5 20 8)

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