1: (0 2 15)

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

2: (1 19 4)

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

3: (2 18 11)

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

4: (10 16 13)

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