Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| # | Date | Opponent | Score | Result | Competition |
| --- | --- | --- | --- | --- | --- |
| 1 | 1988 | Indonesia | 4-0 | Won | 1988 AFC U-17 Championship Group Stages |
| 2 | 1988 | South Korea | 6-1 | Won | 1988 AFC U-17 Championship Group Stages |
| 3 | 1988 | South Korea | 6-1 | Won | 1988 AFC U-17 Championship Group Stages |
| 4 | 1988 | South Korea | 6-1 | Won | 1988 AFC U-17 Championship Group Stages |
| 5 | 1988 | South Korea | 6-1 | Won | 1988 AFC U-17 Championship Group Stages |
| 6 | 1988 | Iraq | 2-1 | Won | 1988 AFC U-17 Championship Semifinals |
| 7 | 1988 | Bahrain | 2-0 | Won | 1988 AFC U-17 Championship Final |
| 8 | 1988 | Bahrain | 2-0 | Won | 1988 AFC U-17 Championship Final |
| 9 | June 12, 1989 | Guinea | 2-2 | Draw | 1989 FIFA U-16 World Championship Group Stages |
| 10 | June 12, 1989 | Colombia | 1-0 | Won | 1989 FIFA U-16 World Championship Group Stages |
| 11 | June 12, 1989 | Bahrain | 1-0 | Won | 1989 FIFA U-16 World Championship Semifinals |
| 12 | February 22, 1989 | Portugal | 3-0 | Won | 1989 FIFA World Youth Championship Group Stages |
| 13 | 1989 | Kuwait | 1-0 | Won | 1989 Palestine Cup of Nations for Youth Group Stages |
| 14 | 1989 | Bahrain | 1-1(4-3) | Lost | 1989 Palestine Cup of Nations for Youth Third Place |
Question:
how many times was south korea the consecutive opponent?
Answer:
4