Form a musical piece based on the provided motif while observing the defined structure.
X:1
L:1/16
Q:1/4=138
M:2/4
K:Gdor
['[gb][fa][gb][fa] [eg]4 [fa][eg][fa][eg] [cf]4 [eg]6', "[eg]2[fa]2[gb]2[ac']2 [gb][ea][gb][fa] [eg]4 [fa][eg][fa][eg] [cf]4 [eg]6 [cf]2"  
X:1
L:1/16
Q:1/4=138
M:2/4
K:Gdor
"C" [gb][fa][gb][fa] [eg]4 |"F" [fa][eg][fa][eg] [cf]4 |"C" [eg]6 [cf]2 | [eg]2[fa]2[gb]2[ac]2 | 
 [gb][fa][gb][fa] [eg]4 |"F" [fa][eg][fa][eg] [cf]4 |"C" [eg]6 [cf]2 | [eg]2 z2 [eg]4 |: 
"C" [eg]2[fa]2[gb]2[ac']2 |"Bb" [bd'][ac'][gb]2"F" [ac'][gb][fa]2 |"C" [gb]6 [ac']2 | 
 [gb][ac'][gb][fa] [eg]4 ::"C" [gb][fa][gb][fa] [eg]4 |"F" [fa][eg][fa][eg] [cf]4 | 
"C" [eg]6 [cf]2 | [eg]2[fa]2[gb]2[ac']2 | [gb][ea][gb][fa] [eg]4 |"F" [fa][eg][fa][eg] [cf]4 | 
 [eg]6 [cf]2 | [eg]2 z2 [eg]4 :|  