What's Hiding Amongst the Crowd?

A word is on the loose and now has tried to hide amongst a crowd of tall letters! Help write a function to detect what the word is, knowing the following rules:

• The wanted word is in lowercase.
• The crowd of letters is all in uppercase.
• Note that the word will be spread out amongst the random letters, but their letters remain in the same order.

Examples

detect_word("UcUNFYGaFYFYGtNUH") ➞ "cat"

detect_word("bEEFGBuFBRrHgUHlNFYaYr") ➞ "burglar"

detect_word("YFemHUFBbezFBYzFBYLleGBYEFGBMENTment") ➞ "embezzlement"

Notes

N/A