Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
Q:1/4=85
M:2/4
K:Bb
['F>F ED DD D2 F>F FF F2', 'z2 F>F ED D2 D2 F>F FF']  
X:1
L:1/8
Q:1/4=85
M:2/4
K:Bb
 F>F ED | DD D2 | F>F FF | F2 z2 | G>G GG | GFFF | =E>E EE | F2 z2 || F>F ED | D2 D2 | F>F FF | 
 F2 z2 | G>G GG | FEEG | F>F FE | D2 z2 |]  