Number combination generator

Do you have MATH skills? I need a custom number combination generator using specific number range. i need to be able to install on a web page (wordpress).


requirements
- 5 columns (think BINGO)
Column A: random number between 1-15
Column B: random number between 16-30
Column C: random number between 31-45
Column D: random number between 46-60
Column E: random number between 61-75

- Option to select how many unique variations (lines) per run up to 500; no two variations(Lines) can be the same.

- must be output in CSV: see example

12,17,34,46,70
14,29,43,46,65
And so on...

- Option to randomly generate a WILD entry in one position per variation (line) instead of a number if the option is selected. The WILD name should be a variable name that can be set by the user. Example:

12,WILD,34,46,70
14,29,43,WILD,65
And so on...

or

12,17,FREE,46,70
14,29,43,FREE,65
And so on...

The user would enter how many line variations they want to generate and a radio button if they want to substitute a variable name and what that name would be. A submit button would generate the output to a CSV file.

Thoughts?