Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:2/4
K:C
['cdef g2 g2', 'c2 BGdB cGec BGdB c2 c2 (ge).g.e']  
X:1
L:1/8
M:2/4
K:C
 cdef | g2 g2 | fefd | e2 e2 | cdef | g2 g2 | AfdB | c2 c2 :: BGdB | cGec | BGdB | c2 c2 | 
 (ge).g.e | (af).a.f | edcB | c2 c2 :|  