1: (0 2 7)

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

2: (1 20 4)

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

3: (2 11 16)

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

4: (10 19 12)

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