1: (1 5 15)

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

2: (0 8 2)

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

3: (4 19 6)

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

4: (5 17 7)

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