Word look up algorithm

type a function called word lookup that takes a string argument. The function should check if the characters in the string can be used to make any of the words in the 'words.txt' file. Note characters cannot be resampled so each character in the string argument can only occur once in the target word from 'words.txt'. The longest word, and any other words of that length, found in the 'words.txt' file that can be made from the characters in the string argument should be returned in a list.

The file content looks like this:

A

a

aa

aal

aalii

aam

Aani

aardvark

aardwolf

Aaron

Aaronic

Aaronical

Aaronite

Aaronitic

Aaru

Ab

aba

Ababdeh

Ababua

abac

abaca

abacate

abacay

abacinate

abacination

abaciscus

abacist

aback

abactinal

.....................etc