977 egrep 'abc' /usr/share/dict/words 978 egrep 'b.{4,4}' /usr/share/dict/words 979 egrep '^b.{4}' /usr/share/dict/words 980 egrep '^b.{4}$' /usr/share/dict/words 981 egrep '^b?{4}$' /usr/share/dict/words 982 egrep '^b?$' /usr/share/dict/words 983 egrep '^b.?$' /usr/share/dict/words 984 egrep '^b....$' /usr/share/dict/words 985 egrep '^b[a-z]{4}$' /usr/share/dict/words 986 egrep '^(.)\1$' /usr/share/dict/words 987 egrep '(.)\1' /usr/share/dict/words 988 egrep '([^l])\1' /usr/share/dict/words 989 egrep '([^lrcs])\1' /usr/share/dict/words 990 egrep '([^lrcsebf])\1' /usr/share/dict/words 991 egrep '(w)\1' /usr/share/dict/words 992 egrep '(.)(.)\2\1' /usr/share/dict/words 993 egrep '^(.)(.)\2\1$' /usr/share/dict/words 994 egrep '^....$' /usr/share/dict/words 995 egrep '^(.)+(.)+\2\1$' /usr/share/dict/words 996 egrep '(th).*\1.*\1' /usr/share/dict/words