[% SET a = 'aaa12aaa34aaa' -%]
[% a.split('\\\d\\\d').join(' ') %]
[% SET a = '1aaa2aaa3aaa4' -%]
[% a.split('aaa').join(' ') %]
[% SET a = 'aaa12aaa34aaa' -%]
[% a.split('\\\d\\\d').join(' ') %]
[% SET a = '1aaa2aaa3aaa4' -%]
[% a.split('aaa').join(' ') %]