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_18 ( horizontal_bar VARCHAR, parallel_bars VARCHAR, pommel_horse VARCHAR, position VARCHAR )

### Question ###
What is the horizontal bar score with a pommel horse of n/a, and the position is less than 27, and the parallel bars score is 15.800?

### Accurate SQL ###

SELECT horizontal_bar FROM table_name_18 WHERE pommel_horse = "n/a" AND position < 27 AND parallel_bars = "15.800"