#Retina, <s>62</s> <s>43</s> 35 bytes

8 bytes thanks to [@Martin Büttner](http://codegolf.stackexchange.com/users/8478/martin-b%C3%BCttner).

    ^
    11:
    $
    ;1$`;11$`
    (1+):(\1*)1*
    $1$2

[Try it online!](http://retina.tryitonline.net/#code=XgoxMToKJAo7MSRgOzExJGAKKDErKTooXDEqKTEqCiQxJDI&input=MTExMQ)

Input in unary, output in unary separated by semi-colon (`;`).

##Previous 43-byte version:

    .+
    11:$&;111:$&;1111:$&
    \b(1+):(\1*)1*
    $1$2

[Try it online!](http://retina.tryitonline.net/#code=LisKMTE6JCY7MTExOiQmOzExMTE6JCYKXGIoMSspOihcMSopMSoKJDEkMg&input=MQ)

Input in unary, output in unary separated by semi-colon (`;`).

##Previous 62-byte version:

    .+
    $&11;$&111;$&1111
    ((11)+)1*;((111)+)1*;((1111)+)1*
    $1;$3;$5

[Try it online!](http://retina.tryitonline.net/#code=LisKJCYxMTskJjExMTskJjExMTEKKCgxMSkrKTEqOygoMTExKSspMSo7KCgxMTExKSspMSoKJDE7JDM7JDU&input=MTExMQ)

Input in unary, output in unary separated by semi-colon (`;`).