গো \B রেজেক্স

package main
import (
  "fmt"
  "regexp"
)
func main() {

  string  := "গোপাইথন"
  pattern := regexp.MustCompile(`\Bপাইথন`)

  for _, match := range pattern.FindAllString(string, -1) {
    fmt.Println(match)
  }
}