Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:2/4
K:G
['GBGB GB dc/B/', 'G2 dd Td2 e.c .c.c e>e Te2']  
X:1
L:1/8
M:2/4
K:G
 GBGB | GB dc/B/ | AcAc | Ac ed/c/ | GBGB | GB dc/B/ | cB AA | G2 G2 :: dd Td2 | e.c .c.c | 
 e>e Te2 | gd.d.d | g>g Tg2 | e.c.c.c | Bc/A/ GF | G>ABB :|  