SQL query question

Examine the following SQL query, and explain clearly and succinctly what it means. Will
the query work? Explain why or why not.

WITH​ ​processed_users
​AS​ ​(​SELECT​ ​LEFT​(u​.​phone_country​,​ 2​)​ ​AS​ ​short_phone_country​,
 SELECT​ FROM​
WHERE​ GROUP​ ORDER​
​u​.​id ​FROM​ ​users​ ​u)
​t​.​user_id​,
​t​.​merchant_country​,
​Sum(​ t​.​amount​ ​/​ ​fx​.​rate​ ​/​ ​Power(​ ​10​,​ ​cd​.​exponent))​ ​AS​ ​amount ​transactions​ ​t
​JOIN​ ​fx_rates​ ​fx
​ON​ ​(​ ​fx​.​ccy​ ​=​ ​t​.​currency
​AND​ ​fx​.​base_ccy​ ​=​ ​'EUR'​ ​)
​JOIN​ ​currency_details​ ​cd
​ON​ ​cd​.​currency​ ​=​ ​t​.​currency
​JOIN​ ​processed_users​ ​pu ​ON​ ​pu​.​id​ ​=​ ​t​.​user_id
​t​.​source​ ​=​ ​'GAIA'
​AND​ ​pu​.​short_phone_country​ ​=​ ​t​.​merchant_country ​BY​ ​t​.​user_id​,
​t​.​merchant_country ​BY​ ​amount​ ​DESC​

2. Find 5 likely fraudsters (not already found in fraudsters.csv!), provide their user_ids, and explain how you found them and why they are likely fraudsters.