diff --git a/1984/rules b/1984/rules.txt similarity index 100% rename from 1984/rules rename to 1984/rules.txt diff --git a/1985/rules b/1985/rules.txt similarity index 100% rename from 1985/rules rename to 1985/rules.txt diff --git a/1986/rules b/1986/rules.txt similarity index 100% rename from 1986/rules rename to 1986/rules.txt diff --git a/1987/rules b/1987/rules.txt similarity index 100% rename from 1987/rules rename to 1987/rules.txt diff --git a/1989/rules b/1989/rules.txt similarity index 100% rename from 1989/rules rename to 1989/rules.txt diff --git a/1991/rules b/1991/rules.txt similarity index 100% rename from 1991/rules rename to 1991/rules.txt diff --git a/1992/rules b/1992/rules.txt similarity index 100% rename from 1992/rules rename to 1992/rules.txt diff --git a/1993/rules b/1993/rules.txt similarity index 100% rename from 1993/rules rename to 1993/rules.txt diff --git a/1994/rules b/1994/rules.txt similarity index 100% rename from 1994/rules rename to 1994/rules.txt diff --git a/1995/rules b/1995/rules.txt similarity index 100% rename from 1995/rules rename to 1995/rules.txt diff --git a/1996/rules b/1996/rules.txt similarity index 100% rename from 1996/rules rename to 1996/rules.txt diff --git a/1998/rules b/1998/rules.txt similarity index 100% rename from 1998/rules rename to 1998/rules.txt diff --git a/2000/rules b/2000/rules.txt similarity index 100% rename from 2000/rules rename to 2000/rules.txt diff --git a/2001/rules b/2001/rules.txt similarity index 100% rename from 2001/rules rename to 2001/rules.txt diff --git a/2004/rules b/2004/rules.txt similarity index 100% rename from 2004/rules rename to 2004/rules.txt