Develop melodies utilizing the stated letter notation and the provided theme.
X:1
L:1/4
M:none
K:Bb
['D G G B c']  
X:1
L:1/4
M:none
K:Bb
 D | G G B c | B G F D | G G B c | B3 (B/ c/) | d3/2 c/ d D | B2 c (B/ c/) | d d (c/ B/) A | G2 |]  