options(encoding = "UTF-8")

test1 <- 'aland islands'
test2 <- 'åland islands'

regex1 <- "[å|a]land islands"
regex2 <- "\\b[å|a]land islands"

grepl(regex1, test1, perl = TRUE)
grepl(regex2, test1, perl = TRUE)

grepl(regex1, test2, perl = TRUE)
grepl(regex2, test2, perl = TRUE)

grepl(regex1, test2, perl = FALSE)
grepl(regex2, test2, perl = FALSE)
# your code goes here