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Cognomen Krengkai (Krengkai ) , in the world, is an extremely rare last name. Much more frequently, Krengkai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Krengkai | Thailand |
Chinon, Rodsri, Srijaiboon, Kummalai, Chaikamwang, and Thongprung