Compose a tune following the outlined musical pattern.
'Ternary', 'Sectional: Verse/Chorus/Bridge'  
X:1
L:1/8
M:4/4
K:D
 e |: fB B2 AFde | z g g2 eB A2 | fB B2 AFde |1 z bag fe d2 :|2 z bag fedA |: dAab z gfe | 
 fB B2 AF A2 | dAab z gfe |1 fB B2 AF d2 :|2 fB B2 AFde ||  