use strict;use warnings;$|=1;
(@ARGV eq 4) ? ( ($",$~,$:,$.) = @ARGV,$^=$_='0000') : ($"=$_=$^=$.=$:='0000',$~='0001');
{
  select undef,undef,undef,1;0
  ||    s:0000:0001: ||    s:0001:0010:
  ||    s:0010:0011: ||    s:0011:0100:
  ||    s:0100:0101: ||    s:0101:0110:
  ||    s:0110:0111: ||    s:0111:1000:
  ||    s:1000:1001: ||    s:1001:0000:
  &&$^=~s:0000:0001: ||$^=~s:0001:0010:
  ||$^=~s:0010:0011: ||$^=~s:0011:0100:
  ||$^=~s:0100:0101: ||$^=~s:0101:0000:
  &&$.=~s:0000:0001: ||$.=~s:0001:0010:
  ||$.=~s:0010:0011: ||$.=~s:0011:0100:
  ||$.=~s:0100:0101: ||$.=~s:0101:0110:
  ||$.=~s:0110:0111: ||$.=~s:0111:1000:
  ||$.=~s:1000:1001: ||$.=~s:1001:0000:
  &&$:=~s:0000:0001: ||$:=~s:0001:0010:
  ||$:=~s:0010:0011: ||$:=~s:0011:0100:
  ||$:=~s:0100:0101: ||$:=~s:0101:0000:
  &&(
    $~=~s:0000:0001: ||$~=~s:0001:0010:
  ||(
    $~=~s:0010:0011: ? $"=='0001'
  &&(
    $~=$"            , $" ='0000'
  ):$~=~s:0011:0100: or$~=~s:0100:0101:
  or$~=~s:0101:0110: or$~=~s:0110:0111:
  or$~=~s:0111:1000: or$~=~s:1000:1001:
  )) 
  ||$~=~s:1001:0000: &&$"=~s:0000:0001:
  ||$"=~s:0001:0000:;
  print "\r", $",'.',$~,':',$:,'.',$.,':',$^,'.',$_;
  redo
}