Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:4/4
K:G
['G/G/GGB degd edgd edeg G/G/GGB dege egdB', 'gabg aegd']  
X:1
L:1/8
M:4/4
K:G
|: G/G/GGB degd | edgd edeg | G/G/GGB dege | egdB AG E2 :: gabg aegd | Bdde fg e2 | gabg aegd | 
 egdB AG E2 :|  