1: (0 2 15)

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

2: (1 20 3)

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

3: (2 17 4)

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

4: (14 19 16)

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