1: (1 5 16)

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

2: (0 7 4)

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

3: (1 5 16)

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

4: (6 17 15)

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