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Simple awk match for multiple lines

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# 1  
Old 02-11-2013
Simple awk match for multiple lines
Is there a simple way to use awk to match multiple lines?? Somehow using \n isn't working for me. Ultimately I'm trying to insert "WWW" 3 lines above "eee".

input
Code:
aaa
bbb
ccc
ddd
eee
fff

output
Code:
aaa
bbb
WWW
ccc
ddd
eee
fff

Using:
Code:
awk '{a[NR]=$0;}/eee/{a[NR-3]="www\n" a[NR-3];}END{for(i=1;i<=NR;i++)print a[i];}' file

This works, but how do I match "eee \n fff" ??
# 2  
Old 02-11-2013
Code:
awk '   {
                a[NR]=$0;
        } /eee/ {
                        f = 1;
        } !/eee/ && !/fff/ {
                        f = 0;
        } /fff/ && f {
                a[NR-4]=a[NR-4] RS "WWW";
        } END {
                for(i=1;i<=NR;i++) {
                        print a[i];
        }
}' file

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