Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['B2 G (B/c/d)B', 'G2 (d/e/4f/4) gag fgf e2 d B3']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 (d/c/) | B2 G (B/c/d)B | A2 F (A/B/c)A | B2 G (B/c/d)B | d3 g2 (d/c/) | B2 G (B/c/d)B | A2 G FED | 
 G2 c (B/c/d)B | G3 G2 :: (d/e/4f/4) | gag fgf | e2 d B3 | gag f2 g | a3 d2 (c/B/) | c2 a B2 g | 
 ABG FED | GAB cAF | G3 G2 :|  