#[05AB1E](https://github.com/Adriandmen/05AB1E), <s>7</s> <s>6</s> 4 bytes

Code:

    lIl-

[Try it online!](http://05ab1e.tryitonline.net/#code=bElsLQ&input=RQpUaGlzIGlzIGEgbGlwb2dyYW0u)

Truthy is when the current letter is outputted. Falsy is when nothing is outputted.

Uses **CP-1252** encoding.