How can i create a specific loop which stores values in a matrice?

Dear Community,

First of all thank you for your support in the last days. Here is my last question. I Promise (the question is not the same like last time).

I have an input-table. It has 3 columns and some rows -> The first column are my x-coordinates and the second column are my y-coordinates. (Of my start points) This start point is always my left bottom corner point of my rectangle. From this point i want to draw my rectangle. (height and width should be a constant). I have big problems with loops and matrices..

My output must be looking like: AllPoints= [0,0;1,0;1,1;0,1;5,5;10,5;10,10;5,10;2,2;4,2;4,4;2,4]; -> Explanation see screenshot

clc % löscht den Bildschirm
clear all % löscht alle Variablen

%Table -> (start Points...)
%12  0  10
%14  0  30
%16  0  54
%18  0  51
%20  0  35
%22  0  12
%14  2  25
%16  2  35

Input_Matrix = readtable('Testbeispiel_Rainflow.dat',...
    'Delimiter','\t','ReadVariableNames',false)%,'Format','%f%f%f')

Thank you! Have a pleasant day

[per isakson]

I fail to see the relation between the data in your script and AllPoints.