1: (0 5 10)

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

2: (1 20 8)

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

3: (4 19 6)

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

4: (5 12 7)

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