Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/8
M:2/2
K:Bb
['B2 dB', 'dfdB egce']  
X:1
L:1/8
M:2/2
K:Bb
 A | B2 dB FBDB | c2 ec AcFA | B2 dB FBDe | dBfd c2 B :| e | dfdB egce | dBfB AcFe | dfdB egce | 
 dBfd c2 Be | dfdB egce | dBfB AcFA | BdcA BGFD | EGDF Cedc ||  