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:
| Name | Country | Status | Moving to | Transfer window | Transfer fee |
| --- | --- | --- | --- | --- | --- |
| Kanu | BRA | Loaned out | CercleBrugge | Winter | n/a |
| Kayouté | SEN | Loaned out | Kortrijk | Summer | n/a |
| Mulopo Kudimbana | COD | Loaned out | Union | Summer | n/a |
| Proto | BEL | Loaned out | Germinal Beerschot | Summer | n/a |
| Siani | CMR | Loaned out | Sint-Truiden | Summer | n/a |
Question:
WHAT IS THE COUNTRY WITH SUMMER TRANSFER WINDOW?
Answer:
SEN, COD, BEL, CMR