On-line Te Reo Māori Dictionary

Me i tae wawe mai koutou, kua whaiwāhi mai koutou ki te kōrero.
If you had arrived in time, you could have participated in the discussion.
If... (using me) - me

I whaiwāhi atu hoki a Tamahea rāua ko Pita ki te whakataetae
Tamahea and Pita also took part in the competition

Me i tae wawe mai koutou, kua whaiwāhi mai koutou ki te kōrero
If you had arrived in time, you could have participated in the discussion