Craft tunes following the prescribed musical structure and incorporating the given motif.
X:1
L:1/8
M:2/4
K:Bb
["f' f'"]  
X:1
L:1/8
M:2/4
K:Bb
 f3/2 f/ d f | b2 c' f' | b2 g b | f4 | f' f' f' d' | c'2 d' f | g2 f d | c4 |]  