Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/8
M:4/4
K:G
['B2 dB c2 Ac', 'g fgaf gbag fdcA'  
X:1
L:1/8
M:4/4
K:G
|: B2 dB c2 Ac | BGGB d3 c | B2 dB c2 Ac | dBcA BGGA | B2 dB c2 Ac | BGGB d3 c | B2 dB c2 Ac |1 
 dBcA BGGA :|2 dBcA BGGg |: fgaf gefd | cAAB c3 g | fgaf gbag | fdcA BGGg | fgaf gefd | cAAB c3 g | 
 fgaf gbag | fdcA BG G2 :|  