how to set / add another rules in random selection code

this is my code for random selection of nurse scheduling...

i have 7 columns (work of day) and M rows ..

how can I make the 44(off) is just one 44 in a week and before 44 must 33(night)?

row = get(handles.tblLoad,'Data');

[rs cs] = size(row);

dataName=row(1:rs);

set(handles.tblGenerate,'RowName',dataName);

   m=str2double(get(handles.txtjumlah,'String'));

%call function from file randomwords.m to generate row by row randomly

%  B = cell(m,7);

% B{m,7} = [];

% for i = 1:1

%     for q = 1:m

%         for j = 1:7

%             B{q,j}=randomwords(10,1) %random mx7 dlm cell

%         end

%     end   

% end

% x=cell2mat(B); % convert jadi matrix

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% This function will randomly set a rules for soft constraint and save it in N

% case 1

% +----------------------+

% |  Shift        |  Percent |

% |11(Morning)|    0.5   |

% |22(Evening)|    0.3   |

% |33(Night)     |  0.175 |

% |44(off)          |   0.025 |

% +----------------------+

% case 2

% +----------------------+

% |  Shift    |  Percent |

% |11(Morning)|   0.45   |

% |22(Evening)|   0.33   |

% |33(Night)  |   0.195  |

% |44(off)    |   0.025  |

% +----------------------+

% case 3

% +----------------------+

% |  Shift    |  Percent |

% |11(Morning)|   0.40   |

% |22(Evening)|   0.36   |

% |33(Night)  |   0.215  |

% |44(off)    |   0.025  |

% +----------------------+

AA = [m 7];

for i=1:7

%bil=round(rand(1,1)*2) %random number from 0-2

bil44=1;

      switch bil

       case 0

           bil11=round(m*0.5)

           bil22=round(m*0.3)

           bil33=round(m*0.175)

           bil44= round(m*0.025) 

      case 1

           bil11=round(m*0.45)

           bil22=round(m*0.33)

           bil33=round(m*0.195)

           bil44= round(m*0.025) 

       case 2

           bil11=round(m*0.40)

           bil22=floor(m*0.36)

            bil33=round(m*0.215)

            bil44= round(m*0.025) 

end

          if bil44==0

          bil44=1;

end

N(:,i)=[bil11;bil22;bil33;bil44] % set of rules of soft constraint

end

% Data of shift is assign in mx7 cell and store in x

t=sum(N)~=AA(1);

if isnan(m)

      msgbox('Total of nurse is not a valid number','Warning','error')

else

if any(t), I1 = randi(size(N,1)-1);

      N(I1,:) = N(I1,:)-t;

end

x = zeros(AA);

xx = 11*(1:4)';

for j = 1:size(N,2)

      x(randperm(AA(1)),j) = ...

         cell2mat(arrayfun(@(i)xx(i)*ones(N(i,j),1),1:length(xx),'un',0).');

end

end