Leominster and Fitchburg run together at the line, three-deckers and small yards climbing the slope on both sides. Pereira Landscaping works that seam — mowing, trimming, edging the narrow strips where a city lawn meets a city sidewalk, and hauling out whatever the season sheds. In winter those same tight driveways need plowing done carefully, with room left over to open a car door. The thaw here arrives in pieces, sun side first, and the crew follows it street by street. Leominster, Fitchburg, Lunenburg, Lancaster and Shirley.