Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
Q:1/4=120
M:4/4
K:F
['f2 eg', 'd<cc c d>efd efg>e fgab ag-gb a<fec', 'A<FF c F>GAF ED-DF G>ABG Ac-cA |1']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:F
"^Briskly." c | f2 eg f2 eg | fdcB BGAF | f2 eg fagf | eg=B>d d<cc :| c | d>efd efg>e | 
 fgab ag-gb | a<fec d<fc<A | B<dc>B A<FF :| c | F>GAF ED-DF | G>ABG Ac-cA |1 B>cdf egfd | 
 c<BG>B A<FF :|2 B>cdf e<gf<a | b<ge>B A<FF |]  