Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:12/8
K:Bmin
['F2 B BAB d2 e faf e2', 'B3 f3 e3 d3 c3 BAB edB']  
X:1
L:1/8
M:12/8
K:Bmin
|: F2 B BAB d2 e faf | e2 e efe c2 e a3 | F2 B BAB d2 e faf | e2 d B2 A B3 B3 :: f3 e3 d3 c3 | 
 BAB edB A2 F EDE | F2 B BAB d2 e faf | e2 d B2 A B3 B3 :|  