sql - problem with select -

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I have a table with two column rows 

  A1A2B1 B3C1C2C3   
 And I want to get it only from this ID (A, B or C) which contains only 2 rows with value 2, from this table I should have got, the row with 2 does not have a sequence of beakus, and there are rows with 1 and b in C, but it also has row with C. ..  
 What is the simplest way?  
 
 
  Calling your table by calling col1 call 1 (separate call 2) = 2 and the minimum (call2) = 1 and maximum (col2) = 2   
 or another extension for more than 2 numbers  
  SELECT Col1 HAVING MIN (case when COL2 IN (1, 2) then 1 ELSE 0 END) = 1 and COUNT (DISTINCT col2) = 2     from yourtable group to col1

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