We began to write to one another on an irregular basis.

However, he knows of 14- and 16-year-old girls who do it on an irregular basis.

I reported to NPI on an irregular basis when I was told to report and I took Kelly there when instructed.

Jack Mitchell-Anyon runs the music venue Space Monster, presenting a range of bands from Whanganui, nationwide and overseas on an irregular basis.

On an irregular basis and without any apparent logic, various necessities suddenly vanish in the country.