Solve the programming task below in a Python markdown code block.
CSS colors are defined using a hexadecimal (HEX) notation for the combination of Red, Green, and Blue color values (RGB).

Specifications of HEX Color Code

■ It must start with a '#' symbol.

■ It can have $3$ or $\boldsymbol{6}$ digits.

■ Each digit is in the range of $\mbox{o}$ to $\mbox{F}$. ($1,2,3,4,5,6,7,8,9,0,A,B,C,D,E$ and $\mbox{F}$).

■ $A-F$ letters can be lower case. ($a,b,c,d,e$ and $\mbox{f}$ are also valid digits).

Examples  

Valid Hex Color Codes
#FFF 
#025 
#F0A1FB 

Invalid Hex Color Codes
#fffabg
#abcf
#12365erff

You are given $N$ lines of CSS code. Your task is to print all valid Hex Color Codes, in order of their occurrence from top to bottom. 

CSS Code Pattern

Selector
{
	Property: Value;
}

Input Format

The first line contains $N$, the number of code lines.

The next $N$ lines contains CSS Codes.  

Constraints

$0<N<50$

Output Format

Output the color codes with '#' symbols on separate lines.

Sample Input
11
#BED
{
    color: #FfFdF8; background-color:#aef;
    font-size: 123px;
    background: -webkit-linear-gradient(top, #f9f9f9, #fff);
}
#Cab
{
    background-color: #ABC;
    border: 2px dashed #fff;
}   

Sample Output
#FfFdF8
#aef
#f9f9f9
#fff
#ABC
#fff

Explanation

#BED and #Cab satisfy the Hex Color Code criteria, but they are used as selectors and not as color codes in the given CSS. 

Hence, the valid color codes are:

#FfFdF8

#aef

#f9f9f9

#fff

#ABC

#fff

Note: There are no comments ( // or /* */)  in CSS Code.