Compose a piece using the specified musical pattern based on the alphabet notation and provided melodic motif.
X:1
L:1/8
M:2/4
K:G
['gf/e/ dc Bc d2', 'GBGB GB d2']  
X:1
L:1/8
M:2/4
K:G
 gf/e/ dc | Bc d2 | gf/e/ dg | fa e2 | gf/e/ dc | Bc d2 | BGAF | G2 z2 :: GBGB | GB d2 | FAFA | 
 FA c2 | GBGB | GB d2 | BGAF | G2 G,2 :|  