1: (0 2 6)

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

2: (1 20 4)

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

3: (2 12 16)

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

4: (11 19 13)

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