This is the main melody, it always repetitives around in this song.
|---------------------------------------------------------------|
|-0-0------0-----------------0-0------0------------------0------|
|--------1---1------------1---------1---1--------------1---1----|
|------4-------4--2--2--4---------4-------4--2--2----4-------4--|
|-----------------0----------2---------------0-----2------------|
|-0-------------------------------------------------------------|