diff --git a/11.07/Homework/Main.py b/11.07/Homework/Main.py
index c3bf3d7..d93615b 100644
--- a/11.07/Homework/Main.py
+++ b/11.07/Homework/Main.py
@@ -18,3 +18,13 @@
             Output.write(f"{Lines[i]}\n" )
         except:
             break
+
+newWord = ''.join([char for char in word if not (char in Blacklist or char in Blacklist.upper())])
+
+
+for char in word:
+    if not (char in Blacklist or char in Blacklist.upper():
+        newWord += char
+
+
+
diff --git a/11.21/Class/02_hossz.txt b/11.21/Class/02_hossz.txt
new file mode 100644
index 0000000..110b6c0
--- /dev/null
+++ b/11.21/Class/02_hossz.txt
@@ -0,0 +1 @@
+84:39
\ No newline at end of file
diff --git a/11.21/Class/04_kedvenc_mufaj.txt b/11.21/Class/04_kedvenc_mufaj.txt
new file mode 100644
index 0000000..9a24763
--- /dev/null
+++ b/11.21/Class/04_kedvenc_mufaj.txt
@@ -0,0 +1 @@
+POP
\ No newline at end of file
diff --git a/11.21/Class/05_osszegzes.txt b/11.21/Class/05_osszegzes.txt
new file mode 100644
index 0000000..304beb2
--- /dev/null
+++ b/11.21/Class/05_osszegzes.txt
@@ -0,0 +1,16 @@
+Boney M. - 284
+Bonnie Tyler - 334
+Dragonforce - 445
+Dschinghis Khan - 460
+Foster The People - 253
+Gloryhammer - 265
+Gopnik McBlyat - 261
+Green Day - 288
+Imagine Dragons - 392
+Korpiklaani - 194
+Linkin Park - 219
+Nirvana - 279
+Powerwolf - 739
+Rick Astley - 213
+Smash Mouth - 237
+Steppenwolf - 216
diff --git a/11.21/Class/06_imagine_dragons_dalok.txt b/11.21/Class/06_imagine_dragons_dalok.txt
new file mode 100644
index 0000000..71b9249
--- /dev/null
+++ b/11.21/Class/06_imagine_dragons_dalok.txt
@@ -0,0 +1,2 @@
+thunder
+radioactive
diff --git a/11.21/Class/06_powerwolf_dalok.txt b/11.21/Class/06_powerwolf_dalok.txt
new file mode 100644
index 0000000..7d6e416
--- /dev/null
+++ b/11.21/Class/06_powerwolf_dalok.txt
@@ -0,0 +1,3 @@
+incense and iron
+venom of venus
+dancing with the dead
diff --git a/11.21/Class/07_torolt.txt b/11.21/Class/07_torolt.txt
new file mode 100644
index 0000000..d6de069
--- /dev/null
+++ b/11.21/Class/07_torolt.txt
@@ -0,0 +1,17 @@
+Rick Astley Never Gonna Give You Up pop 213
+Dragonforce Through the Fire and Flames metal 445
+Boney M. Rasputin pop 284
+Steppenwolf Born To Be Wild rock 216
+Powerwolf Incense and Iron metal 240
+Smash Mouth All Star rock 237
+Nirvana Smells Like Teen Spirit rock 279
+Gloryhammer The Unicorn Invasion of Dundee metal 265
+Powerwolf Venom of Venus metal 208
+Dschinghis Khan Moskau pop 275
+Dschinghis Khan Dschinghis Khan pop 185
+Bonnie Tyler Total Eclipse of the Heart pop 334
+Gopnik McBlyat Snakes In Tracksuits hardbass 261
+Foster The People Pumped Up Kicks pop 253
+Powerwolf Dancing With The Dead metal 291
+Green Day Boulevard of Broken Dreams rock 288
+Korpiklaani Ievan polkka metal 194
diff --git a/11.21/Class/Main.py b/11.21/Class/Main.py
new file mode 100644
index 0000000..613c4fc
--- /dev/null
+++ b/11.21/Class/Main.py
@@ -0,0 +1,55 @@
+def beolvas():
+    with open("playlist.csv",'r') as File:
+        playlist = [ (lambda l : {'eloado' : l[0], "cim" : l[1], "mufaj" : l[2], "hossz" : int(l[3]) } )( line.strip().split(';') ) for line in File ]
+        return playlist
+
+def teljes_hossz(playlist):
+    osszeg = sum([i["hossz"] for i in playlist])
+    m,s = osszeg // 60 ,osszeg % 60
+    with open("02_hossz.txt","w") as File:
+        File.write(f"{m}:{s}")
+
+def leghosszabb_rockzene(playlist):
+    H = [i['hossz'] for i in playlist]
+    with open("leghosszabb_rockzene.txt",'w') as File:
+        File.write(playlist[H.index(max(H))]["cim"])
+
+def leggyakoribb_mufaj(playlist):
+    mufaj = [i['mufaj'] for i in playlist]
+    M = {i : mufaj.count(i) for i in set(mufaj)}
+    count = [*M.values()]
+    with open("04_kedvenc_mufaj.txt","w") as File:
+        File.write( [ *M.keys() ][ count.index(max(count)) ].upper() )
+
+def zeneket_csoportosit(playlist):
+    E = {}
+    for i in playlist:
+        E[i["eloado"]] = E.get(i["eloado"],0) + i["hossz"]
+    with open("05_osszegzes.txt","w") as File:
+        for eloado in sorted(E):
+            File.write(f"{eloado} - {E[eloado]}\n")
+
+def zeneket_listaz(playlist,nev):
+    Dalok = [i["cim"].lower() for i in playlist if i["eloado"].lower() == nev.lower()]
+
+    with open(f"06_{nev.lower().replace(' ','_')}_dalok.txt","w") as File:
+        if Dalok:
+            for i in Dalok:
+                File.write(f"{i}\n")
+        else:
+            File.write("Nincs ilyen eloado a lejatszasi listaban!")
+
+def zeneket_torol(playlist,nevek):
+    with open("07_torolt.txt","w") as File:
+        for i in playlist:
+            if not i['eloado'] in nevek:
+                File.write(f"{i['eloado']} {i['cim']} {i['mufaj']} {i['hossz']}\n")
+
+
+L = beolvas()
+teljes_hossz(L)
+leghosszabb_rockzene(L)
+leggyakoribb_mufaj(L)
+zeneket_csoportosit(L)
+zeneket_listaz(L,"POWERWOLF")
+zeneket_torol(L,["Linkin Park","Imagine Dragons"])
diff --git a/11.21/Class/leghosszabb_rockzene.txt b/11.21/Class/leghosszabb_rockzene.txt
new file mode 100644
index 0000000..3fd6b15
--- /dev/null
+++ b/11.21/Class/leghosszabb_rockzene.txt
@@ -0,0 +1 @@
+Through the Fire and Flames
\ No newline at end of file
diff --git a/11.21/Class/playlist.csv b/11.21/Class/playlist.csv
new file mode 100644
index 0000000..3db304e
--- /dev/null
+++ b/11.21/Class/playlist.csv
@@ -0,0 +1,20 @@
+Rick Astley;Never Gonna Give You Up;pop;213
+Imagine Dragons;Thunder;pop;204
+Dragonforce;Through the Fire and Flames;metal;445
+Boney M.;Rasputin;pop;284
+Steppenwolf;Born To Be Wild;rock;216
+Powerwolf;Incense and Iron;metal;240
+Smash Mouth;All Star;rock;237
+Nirvana;Smells Like Teen Spirit;rock;279
+Gloryhammer;The Unicorn Invasion of Dundee;metal;265
+Powerwolf;Venom of Venus;metal;208
+Imagine Dragons;Radioactive;rock;188
+Dschinghis Khan;Moskau;pop;275
+Dschinghis Khan;Dschinghis Khan;pop;185
+Bonnie Tyler;Total Eclipse of the Heart;pop;334
+Gopnik McBlyat;Snakes In Tracksuits;hardbass;261
+Foster The People;Pumped Up Kicks;pop;253
+Linkin Park;In The End;rock;219
+Powerwolf;Dancing With The Dead;metal;291
+Green Day;Boulevard of Broken Dreams;rock;288
+Korpiklaani;Ievan polkka;metal;194