My code is not returning any feasible point. The error says no point satisfies the constraints.Kindly suggest what is the error in my code?

if true
  cost=[0.09,0.08,0.08,0.09,0.1,0.1,0.08,0.1,0.11,0.11,0.11,0.11,0.11,0.11,0.09,0.1,0.12,0.11,0.12,0.11,0.12,0.11,0.12,0.11];
f=[cost,cost,cost,cost,cost]
size(f)
y=ones(1,24);
z=zeros(1,24);
Aeq=[y,z,z,z,z;z,y,z,z,z;z,z,y,z,z;z,z,z,y,z;z,z,z,z,y]
size(Aeq)
Beq=[1;3;2.88;3;5];
lb1=zeros(1,24);
lb1(:,19:20)=1;
ub1=zeros(1,24);
ub1(:,19:20)=1;
lb2=zeros(1,24);
lb2(:,3:5)=0
lb2(:,21:22)=0
ub2=zeros(1,24);
ub2(:,3:5)=1
ub2(:,21:22)=1
lb3(:,1:24)=0.12;
ub3(:,1:24)=0.12;
lb4=zeros(1,24);
ub4(:,1:24)=1.5;
lb5=zeros(1,24);
lb5(:,1:8)=0.1;
lb5(:,20:24)=0.1;
ub5=zeros(1,24);
ub5(:,1:8)=3;
ub5(:,20:24)=3;
lbi=[lb1 lb2 lb3 lb4 lb5 ];
ubi=[ub1 ub2 ub3 ub4 ub5 ];
lb=lbi';
ub=ubi';
A=[];B=[];
[x,fval] = linprog(f,A,B,Aeq,Beq,lb,ub)
end