diff --git a/Relazione/Response numbers.txt b/Relazione/Response numbers.txt
new file mode 100644
index 0000000..3f8c34f
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+++ b/Relazione/Response numbers.txt	
@@ -0,0 +1,58 @@
+First number
+
+1xx 	Positive Preliminary reply
+
+2xx 	Positive Completion reply
+
+3xx 	Positive Intermediate reply
+
+4xx 	Transient Negative Completion reply
+
+5xx 	Permanent Negative Completion reply
+
+
+Second number
+
+x0x 	Syntax
+
+x1x 	Information
+
+x2x 	Connections
+
+x3x 	Authentication and accounting
+
+x4x 	Unspecified as of RFC 959
+
+x5x 	File system
+
+
+
+
+Responses:
+I number)
+* 2x positive completion reply
+* 4x transient negative completion reply (command not executed)
+* 5x permanent negative completion reply (errors)
+
+II number)
+* x0 syntax
+* x1 information
+* x2 connection
+* x5 file system
+
+
+
+20 OK					MEOK
+21 help message				MEHE
+22 not used				-
+25 file purged				MEFP
+
+40 not used				-
+41 not used				-
+42 shutting down			MESD
+45 requested file action not taken	MENT
+
+50 syntax error				MESY
+51 not used				-
+52 not used				-
+55 server error				MESE
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