1: (0 3 10)

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

2: (2 18 4)

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

3: (1 20 15)

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

4: (3 19 5)

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