Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:3/8=106
M:6/8
K:G
['GFG EFG AFA DEF GBd gfe e3', 'G3 gfg efg aga def gfe afd']  
X:1
L:1/8
Q:3/8=106
M:6/8
K:G
 GFG EFG | AFA DEF | GBd gfe | e3 d3 | ecA ABc | dBG GAB | EcB cAF | G3- G3 :: gfg efg | aga def | 
 gfe afd | Pc3 B3 | ede ABc | dcd GAB | EcB AGF | G3 G,3 :|  