Form with 4 checkbox

Hi Everyone,

I need your help.

I have 4 checkboxes, each have corresponding title ex.

Checkbox1 = Boy1
Checkbox2 = Boy2
Checkbox3 = Boy3
Checkbox4 = Boy4

If the checkbox is True, then in should be put in ONE CELL (A1). Now, because I have 4 and all have to be under ONE cell, I don't know what to do.

Example: if CheckBox2 and 3 were TRUE, then the answer should be
Boy2 Boy3

Example: if CheckBox1,3 and 4 were TRUE, then the answer should be
Boy1 Boy3 Boy4

Is it possible?

Thank you in advance,

^_^