Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:4/4
K:C
['c2 de f2 d2', 'defd g2 fe']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:C
 c2 de f2 d2 | gfga gfed | c2 de f2 d2 | gfga g4 :: defd g2 fe | dedc B2 G2 | defd g2 fe | 
 dedB c4 :|  