Delete unwanted lines
Delete all lines which does not end in "o.."
Start file
gamag
gamah
ganci
gaoag
gaoah
gaoci
gbmag
gboch
gboci
gcmag
gcmah
gcmai
gcnci
gcoag
gcoah
gcoai
gcoch
gcobg
gcoci
hamag
hamah
hanci
haoag
hbmag
hbnci
hboag
hboch
hboci
hcmag
hcncg
hcnch
hcnci
hcoag
hcoci
iamag
End file
gaoag
gaoah
gaoci
gboch
gboci
gcoag
gcoah
gcoai
gcoch
gcobg
gcoci
haoag
hboag
hboch
hboci
hcoag
hcoci
View Diff
1,3d0
< gamag
< gamah
< ganci
7d3
< gbmag
10,13d5
< gcmag
< gcmah
< gcmai
< gcnci
20,22d11
< hamag
< hamah
< hanci
24,25d12
< hbmag
< hbnci
29,32d15
< hcmag
< hcncg
< hcnch
< hcnci
35d17
< iamag
Solutions by @arturoescaip:
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