@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET WORDSCOUNT=0

FOR /F "USEBACKQ" %%A IN (%~dp0WORDS.TXT) DO (
	SET /A WORDSCOUNT+=1
)

FOR %%A IN (%*) DO (
	SET CURRENTIDX=0
	SET /A "RANDOMIDX=(!RANDOM! * !RANDOM! + !RANDOM!) %% WORDSCOUNT"
	FOR /F "USEBACKQ" %%B IN (%~dp0WORDS.TXT) DO (
		IF !CURRENTIDX!==!RANDOMIDX! (
			SET WORDONE=%%B
		)
		SET /A CURRENTIDX=!CURRENTIDX! + 1
	)
	SET CURRENTIDX=0
	SET /A "RANDOMIDX=(!RANDOM! * !RANDOM! + !RANDOM!) %% WORDSCOUNT"
	FOR /F "USEBACKQ" %%B IN (%~dp0WORDS.TXT) DO (
		IF !CURRENTIDX!==!RANDOMIDX! (
			SET WORDTWO=%%B
		)
		SET /A CURRENTIDX=!CURRENTIDX! + 1
	)

	MOVE /Y "%%~A" "%%~dpA!WORDONE! !WORDTWO!%%~xA"
)