Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/2=90
M:2/2
K:F
['AFGA Bcde f2', 'c6 cd _e4 egfe dcBA B2 d=e']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:F
 (AB) | c2 c2 c2 de | f2 c4 d2 | cfef c2 B2- | B2 A2 A2 G2 | AFGA Bcde | f2 c4 B2 | AFGA Bcde | 
 f2 a4 fe | egce d2 c=B | c6 :: cd | _e4 egfe | dcBA B2 d=e | f4 fagf | edc=B c2 fg | a2 Fa g2 Eg | 
 f2 Df e2 Ce | d2 B,d c2 A,c | B2 G,B A2 c2 | dfeg A2 G2 | F6 :|  