Construct a musical piece using the designated motif and sticking to the alphabetical form presented.
X:1
L:1/8
M:4/4
K:D
['f2 fe d2 ef e2 d2', 'B2 B2']  
X:1
L:1/8
M:4/4
K:D
|: f2 fe d2 ef | e2 d2 B4 | d2 cB A2 d2 | AFdB AFED | f2 fe d2 ef | e2 d2 B2 de | fedB dBAF | 
 B4 E4 :: E2 FA B2 B2 | B2 A2 B4 | D2 EF A3 B | AFdB AFED | E2 FA B2 B2 | B2 A2 B2 de | fedB dBAF | 
 B4 E4 :|  