<?php
$re = '~^(\P{Lu}*\p{Lu}.*?)\s*(\p{Lu}.*)$~us';
$str = 'Иван купил мопед Рига в Москве';
echo $match[1] . "\n" . $match[2];
}
PD9waHAKCiRyZSA9ICd+XihcUHtMdX0qXHB7THV9Lio/KVxzKihccHtMdX0uKikkfnVzJzsKJHN0ciA9ICfQmNCy0LDQvSDQutGD0L/QuNC7INC80L7Qv9C10LQg0KDQuNCz0LAg0LIg0JzQvtGB0LrQstC1JzsKaWYgKHByZWdfbWF0Y2goJHJlLCAkc3RyLCAkbWF0Y2gpKSB7CgllY2hvICRtYXRjaFsxXSAuICJcbiIgLiAkbWF0Y2hbMl07Cn0=