1: (0 5 6)

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

2: (3 8 5)

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

3: (1 20 7)

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

4: (2 18 4)

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