# i = 0
# while i < 10:
#     print(i)
#     i+=1

# i = 10
# while i > 0:
#     print(i)
#     i -= 2

# i = 0
# while True:
#     if i > 3:
#         break
#     print(i)
#     i+=1

i = 0
while i < 10:
    i+=1
    if i == 4:
        continue
    print(i)