Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:6/8
K:C
['cdc c2 c', 'g2 c']  
X:1
L:1/8
M:6/8
K:C
|: cdc c2 c | ceg gec | cdc c2 c | Bcd dBG | cdc c2 c | ceg gec | faf ege | Bcd dBG :: cdc g2 c | 
 e2 c g2 c | cdc g2 c | Bcd dBG | cdc gec | edc gec | faf ege | Bcd dBG :|  