Put the sentences (a-d) in the correct order, then fill in the blank to make a logical text.

Vong, a small village in Ha Noi, is famous for its specialty: com (young sticky rice fakes). To make com, artisans follow a serus of steps. __________

a. After roasting the young rice, they winnow it to remove the husks and then wrap it in two layers of lotus leaves.

b. By following these steps, the flakes get a unique green color and a sweet taste.

c. In the past, people made com by hand, but now they use machines for some steps to work faster.

d. The process involves several traditional techniques, which are carefully passed down from fathers to sons in the village.