Respuesta :
1: By
3: In
5: For
6: In
7: For
8: By
9: In
10: In
11: For
12: By
13: By
14: By
15: For
16: In
17: In
18: Until
3: In
5: For
6: In
7: For
8: By
9: In
10: In
11: For
12: By
13: By
14: By
15: For
16: In
17: In
18: Until
1: By 3: In 5: For 6: In 7: For 8: By 9: In 10: In 11: For 12: By 13: By 14: By 15: For 16: In 17: In 18: Until