Craft a composition using the given motif while maintaining the musical form outlined by alphabet characters.
X:1
L:1/8
M:2/4
K:D
['Ad cd', 'eg fd ec']  
X:1
L:1/8
M:2/4
K:D
 Ad cd | ef df | Ad cd | (ef) d2 | Ad cd | ef df | Ad cd | (ef) d2 || eg fd | ec a2 | eg fd | 
 ec d2 | eg fd | ec a2 | eg fd | ec d2 |]  