Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/4
K:G
['B2 B2 AG G2 FG AB d^c', 'G2 D2 GA B3 A/B/ cc ED', 'G2 FG AB d^c =c2 c2 c2', 'F/E/F/A/ GE']  
X:1
L:1/8
M:2/4
K:G
 B2 B2 | AG G2 | FG AB | d^c =c2 | c2 c2 | BA A2 | GF EF | AG G2 :| D2 GA | B3 A/B/ | cc ED | B4 | 
 dd A>A | BB G>G | AA EF |1 GF ED :|2 G4 || B2 B2 | AG G2 | FG AB | d^c =c2 | c2 c2 | BA A2 | 
 GF EF | AG G2 :| BF BF | BF F/E/F/A/ | GE E>G | FB B2 | BF BF | BF F/E/F/A/ | GE EA/G/ | FD D2 | 
 B2 B2 | AG G2 | FG AB | d^c =c2 | c2 c2 | BA A2 | GF EF | AG G2 ||  