Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_49 (masculine_an_stems VARCHAR, feminine_ō_stems VARCHAR, masculine_u_stems VARCHAR)

### Question ###
What is the masculine an form for the word with a feminine ö ending of siangar and a masculine u ending of sunar?

### Accurate SQL ###

SELECT masculine_an_stems FROM table_name_49 WHERE feminine_ō_stems = "siangar" AND masculine_u_stems = "sunar"