Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
['c/B/ AFF F2 A BGG G2 e', 'F2 z (af/g/a) F2 a (ge/f/g) E2']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:F
|: c/B/ | AFF F2 A | BGG G2 e | fed cdB | AFF F2 :: z | (af/g/a) F2 a | (ge/f/g) E2 g | fef dgf | 
 ecc c3 | dBd (g/a/b).B | cAc (f/g/a).A | BAB GcB | AFF F2 :|  