Construct musical melodies following the designated letter arrangement and the given motif.
X:1
L:1/8
M:4/4
K:C
['c2 (ec) B2 (dB)', 'z2 GABc d2 ef gage dBGB c2']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:G] .abc c2 (ec) B2 (dB) | AGAB AGEF | GAGE DEGB | AGAB AGEG | c2 (ec) B2 (dB) | 
 AGBG AGEF | GAGEDEGA | BGAF G2 z2 || GABc d2 ef | gage dBGB | c2 (ec) B2 (dB) | AGAB AG E2 | 
 gfgd efge | dcBG AGEF | GAGE DEGA | BGAF G2 z2 |]  