Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/8
M:2/4
K:G
['DG B3 ^A BdcB A2', '(3ded B2 (3efe B2 (3ded']  
X:1
L:1/8
M:2/4
K:G
 Bc | dedc B2 G2 | DG B3 ^A | BdcB A2 B2 | c6 AB | cdcA F2 E2 | D2 F2 A3 ^G | AcBA G2 A2 | B6 Bc | 
 dedB G2 E2 | DG B3 ^A | BdcB A2 G2 | e6 ef | gecG EGce | edBG D2 Bd | d2 ^c2 =c2 FA | G6 || Bc | 
 (3ded B2 (3efe B2 | (3ded B2 (3efe B2 | (3ded ^cd ed=cB | c6 AB | (3cdc A2 (3ded A2 | 
 (3cdc A2 (3ded A2 | (3cdc Bc dcBA | B6 Bc | d2 B2 e2 B2 | d2 B2 e2 B2 | g2 fg agfg | e6 ef | 
 gecG E2 ce | gdBG D2 (3Bcd | d2 ^c2 =c2 F2 | G6 ||  