Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['FED cBc def gfg afd', 'd2 f/g/ afd dcd dfa agf gec']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
"^D modal" A/G/ | FED cBc | def gfg | afd cAF | GFG AFD | FED cBc | def gfg | afd cAG | Adc d2 :| 
 f/g/ | afd dcd | dfa agf | gec cBc | def gfg | fdf geg | agf efg | fed cAG | Adc d2 :|  