Create a musical composition incorporating the given motif following the designated alphabetical pattern.
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
['B2 G', 'A2 D G2 B BAB c2', 'ABc ded cBA |1 B2 G G2']  
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
|:"^A" D | G2 B BAB | c2 A ABc | ded cBA |1 B2 G G2 :|2 B2 G G3 |:"^B" d2 d d2 G | c2 B B2 A | 
 e2 d d2 G | B2 A A2 D | G2 B BAB | c2 A ABc | ded cBA |1 B2 G G2 z :|2 B2 G G3 |"^Alt B" |: 
 ded d2 G | c2 B B2 A | d2 GGA B | cBc A2 D | G2 B BAB | c2 A ABc | ded cBA |1 B2 G G2 z :|  