1: (0 5 12)

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

2: (1 20 5)

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

3: (4 13 11)

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

4: (1 19 12)

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