Compare names to range and writing mismatches to new column in Excel

I have a list of names (A2-A200). In the following columns (B2-B200, C2-C200) I have further lists of names. Some of these can be found in column A but others aren't.

I'd like to check all names in B to D to see if there's a match somewhere in A2-A200. If not, it should be written on the same row but in a new column (D). For example

Col A   Col B   Col C   Col D
Mike    Mike    Pau开发者_开发知识库l    Paul
Helen   Helen   Phillip 
Peter   Steve   Mike    Steve
Lucy    Peter   Lucy    
Phillip Helen   Karl    Karl

Thanks for looking.

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Formula for column D

=SUBSTITUTE(TRIM(IF(ISERROR(MATCH(B6,$A$1:$A$200,0)),B6," ")&" "&IF(ISERROR(MATCH(C6,$A$1:$A$200,0)),C6," "))," ",",")

If necassary replace the range $A$1:$A$200 with the extent of your data, or yet better use a table