Write the letters of the numbers listed in consecutive squares on that line. The numbers at the bottom indicate how many different letters are in each column. The first puzzle is solved as an example.

1. | 2. | 3. |

4. | 5. | 6. |

7. | 8. | 9. |

10. | 11. | 12. |

13. | 14. | 15. |

The solutions are here.