1937  grep the american-english | more
 1938  grep the american-english
 1939  grep ^the american-english
 1940  grep the$ american-english
 1941  grep her american-english
 1942  grep cow american-english
 1943  ls
 1944  head answers.txt 
 1945  tail answers.txt 
 1946  tail wordle-allowed-guesses.txt 
 1947  egrep [^st] answers.txt 
 1948  egrep [^st] american-english 
 1949  egrep [^st]5 american-english 
 1950  egrep [^st]^5 american-english 
 1951  egrep [^st]**5 american-english 
 1952  egrep ([^st])5 american-english 
 1953  egrep ^[^st][^st][^st][^st]$ american-english 
 1954  egrep ^[^st][^st][^st][^st][^st]$ american-english 
 1955  egrep ^[abcdefghijklmnopqruvwxyz][abcdefghijklmnopqruvwxyz][abcdefghijklmnopqruvwxyz][abcdefghijklmnopqruvwxyz][abcdefghijklmnopqruvwxyz]$ american-english 
 1956  egrep ^[^st][^st][^st][^st][^st]* answers.txt 
 1957  egrep ^[^st][^st][^st][^st][^st]$ answers.txt 
 1958  egrep ^[^st][^st][^st][^st][^st]* answers.txt 
 1959  egrep ^[^st][^st][^st][^st][^st]$ answers.txt 
 1960  egrep ^[^st][^st][^st][^st][^st]$ answers.txt | wc -l
 1961  wc -l answers.txt 
 1962  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | wc -l
 1963  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt
 1964  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a 
 1965  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a | grep r
 1966  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a | wc -l
 1967  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a | grep r | wc -l
 1968  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a | grep r | grep e | wc -l
 1969  egrep ^[^st][^st][^sta][^str][^ste]$ answers.txt | grep a | grep r | grep e 
 1970  egrep ^[^strc]a[^starc]er$ answers.txt  
 1971  egrep ^[^strce]a[^starcg]er$ answers.txt  
 1972  egrep ^[^strcemk]a[^starcgmk]er$ answers.txt  
 1973  egrep ^[^strcemkp]a[^starcgmkp]er$ answers.txt  
 1974  egrep [violent]* american-english 
 1975  egrep ^[violent]*$ american-english 
 1976  egrep ^[violent]*$ american-english | grep v
 1977  egrep ^[violent][violent][violent][violent][violent]*$ american-english | grep v
 1978  alias
 1979  grep ^[violent][violent][violent][violent][violent]*$ american-english | grep v