You are given the following plaintext/ciphertext pairs:

> 
> ![image 1](https://c1.staticflickr.com/5/4141/4825806138_1bd56f93cf_o.png)
>  they\_got\_my\_contract\_back\_to\_find\_
>  to\_their\_alarm\_a\_dog\_had\_signed\_
> 
> 
> 

> 
> ![image 2](https://c1.staticflickr.com/5/4102/4825196683_c08d30c823_o.png)
>  sonic\_boom\_sonic\_boom\_sonic\_boom\_
>  trouble\_keeps\_you\_runnin\_faster\_
>  sonic\_boom\_sonic\_boom\_sonic\_boom\_
>  save\_the\_planet\_from\_disaster\_
> 
> 
> 

> 
> ![image 3](https://c1.staticflickr.com/5/4095/4825806216_c1d959f5bd_o.png)
>  even\_though\_weve\_never\_said\_it\_
>  theres\_something\_that\_
>  the\_two\_of\_us\_both\_know\_
> 
> 
> 

Derive the plaintext that corresponds to the following cipher text:

> 
> ![image 4](https://c1.staticflickr.com/5/4230/34497529194_e857e154da_o.png)
> 
> 
>