Remove adjacent duplicated words from string I have a string like this string: one one tow tow three three tow one three How can i remove duplicated words to make it like this: one tow three tow one three The point is that I want to write a script that remove duplicated words if they are adjacent only I have tried: echo "$string" | awk '{for (i=1;i<=NF;i++) if (!a[$i]++) printf("%s%s",$i,FS)}{printf("\n")}' but it removes non-adjacent duplicated words also.

echo "one one tow tow three three tow one three" | tr " " "\
" | uniq | tr "\
" " "