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diff --git a/challenge-216/robert-dicicco/python/ch-1.py b/challenge-216/robert-dicicco/python/ch-1.py
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+#!/usr/bin/env python
+# ------------------------------------------
+# AUTHOR: Robert DiCicco
+# DATE  : 2023-05-09
+# Challenge 216 Registration Number ( Python )
+# ------------------------------------------
+
+words = [["abc", "abcd", "bcd", "AB1 2CD"], ["job", "james", "bjorg", "007 JB"], ["crack", "road", "rac", "C7 RA2"]]
+out = []
+
+def CheckWords(wd, rg):
+    flag = 0
+    arr = [x for x in rg]
+    for lett in arr:
+        if wd.count(lett) == 0:
+            flag = 1
+    if flag == 0:
+        out.append(wd)
+
+for wds in words:
+    wds_only = wds[0:-1]
+    reg = wds[-1]
+    print("Input: ",wds_only,", $reg = ", reg)
+    reg = reg.translate({ord(i): None for i in '1234567890 '}).lower()
+    x = 0
+    cnt = len(wds) - 1
+    while x < cnt:
+        CheckWords(wds[x],reg)
+        x += 1
+    print("Output: ",out,"\n")
+    out = []
+
+# ------------------------------------------
+# SAMPLE OUTPUT
+# python .\Registration.py
+# Input:  ['abc', 'abcd', 'bcd'] , $reg =  AB1 2CD
+# Output:  ['abcd']
+
+# Input:  ['job', 'james', 'bjorg'] , $reg =  007 JB
+# Output:  ['job', 'bjorg']
+
+# Input:  ['crack', 'road', 'rac'] , $reg =  C7 RA2
+# Output:  ['crack', 'rac']
+# ------------------------------------------
+
+
+
+