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linux - How to reverse a list of words in a shell string?

I have a list of words in a string:

str="SaaaaE SeeeeE SbbbbE SffffE SccccE"

I want to reverse it in order to get

"SccccE SffffE SbbbbE SeeeeE SaaaaE"

How I can do that with ash?

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You can use awk as follows:

echo "$str" | awk '{ for (i=NF; i>1; i--) printf("%s ",$i); print $1; }'

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