1: (4 7 15)

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

2: (1 8 6)

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

3: (7 17 9)

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

4: (3 16 14)

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