1: (1 10 20)

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

2: (0 19 2)

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

3: (1 12 3)

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

4: (9 18 11)

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