れい instance, example, case 971
れつ queue, line, row 791
列車 れっしゃ train (ordinary)  
れい expression of gratitude 900
礼儀 れいぎ manners, courtesy, etiquette  
冷静 れいせい calm, composure, coolness, serenity 2059 986
冷然 れいぜん coolness  
  レポート report, paper  
練習 れんしゅう practice 2106 915
連想 れんそう association of ideas, suggestion 1136
連続 れんぞく serial, consecutive, continuity, continuing