diff --git a/P.csv b/P.csv
new file mode 100644
index 0000000000000000000000000000000000000000..b33bda1b93503ff9aa2ebb1751bb1a752a95692d
--- /dev/null
+++ b/P.csv
@@ -0,0 +1,4 @@
+1 ,5 ,4 ,
+2 , ,2 ,
+3 ,7 ,1 ,2
+4 ,8 , ,
\ No newline at end of file
diff --git a/Q.csv b/Q.csv
new file mode 100644
index 0000000000000000000000000000000000000000..e3281094c0264d8786678c0faa5f7cff334dd6f8
--- /dev/null
+++ b/Q.csv
@@ -0,0 +1,4 @@
+1 ,6 ,4 ,7
+2 ,8 ,5 ,3
+2 , , ,1
+4 , ,2 ,3
\ No newline at end of file
diff --git a/R.csv b/R.csv
new file mode 100644
index 0000000000000000000000000000000000000000..5f2c21269165f15da2188e526c4461a0317518f9
--- /dev/null
+++ b/R.csv
@@ -0,0 +1,4 @@
+1 ,5 ,4 ,0
+2 , 0,2 ,0
+3 ,7 ,1 ,2
+4 ,8 , 0,0
\ No newline at end of file
diff --git a/S.csv b/S.csv
new file mode 100644
index 0000000000000000000000000000000000000000..b3697e56f2298286b201563d547e42babce6ef7c
--- /dev/null
+++ b/S.csv
@@ -0,0 +1,4 @@
+1 ,6 ,4 ,7
+2 ,8 ,5 ,3
+2 ,0,0,1
+4 ,0,2 ,3
\ No newline at end of file