1: (0 1 3)

(0)(1 20 3 7 4 17 6)(2 10 9)(5 12 8)(11 21 19 15 13)(14 18 16)

2: (3 7 20)

(0)(1 20 4 17 6)(2 10 9)(3)(5 12 8)(7)(11 21 19 15 13)(14 18 16)

3: (1 17 6)

(0)(1)(2 10 9)(3)(4 17 20)(5 12 8)(6)(7)(11 21 19 15 13)(14 18 16)

4: (15 21 19)

(0)(1)(2 10 9)(3)(4 17 20)(5 12 8)(6)(7)(11 21 13)(14 18 16)(15)(19)