Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
M:4/4
K:G
['AcBA Ac B2 GG'  
X:1
L:1/8
M:4/4
K:G
 (gf) |"C" efed"G" B2 dB |"C" AGEG"D" AcBA |"G" GFGA BA (3(Bcd) |"D" e2 A2 A2 (gf) | 
"C" efed"G" BedB |"C" AGEG"D" AcBA |"G" GFGA"C" (3(Bcd)"D" Ac |"G" B2 GG G2 :: GA | 
"Em" BGBd g2 fg |"C" agfg e2 ef |"Em" gfed BA (3(Bcd) |"D" e2 AA A2 (Bd) |"C" (3(efg) fa"G" g2 fe | 
"G" dBAG"D" AcBA |"G" GFGA"C" (3(Bcd)"D" Ac |"G" B2 GG G2 :|  