How to realize the circulation of A1 = B1 A2 = C1 A3 = D1 A4 = E1 A5 = B2 A6 = C2 in excel?

How to realize the circulation of A1 = B1 A2 = C1 A3 = D1 A4 = E1 A5 = B2 A6 = C2 in excel?

Select the data you want from B1
Then, right click "paste special" in A1
Check "transpose" (above OK) to confirm