How can I kill regular part in perl -

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i have lot of following regular part in file want kill word between test1 , test2 how can in perl?

test1 xxx xxx xxx test2 ggg test1 xxx xxx test2 ggg

use flip-flop operator:

$ perl -ne 'print unless /^test1$/ .. /^test2/' <<'end' test1 xxx xxx xxx test2 ggg test1 xxx xxx test2 ggg end

output:

ggg ggg

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