CREATE TABLE table_79908 ("D 41 \\u221a" TEXT, "D 42 \\u221a" TEXT, "D 43 \\u221a" TEXT, "D 44 O" TEXT, "D 45 O" TEXT, "D 46 O" TEXT, "D 47 O" TEXT, "D 48 O" TEXT)

Name the D 41 with D 44 O of r 13
SELECT "D 41 \u221a" FROM table_79908 WHERE "D 44 O" = 'r 13'
SELECT "D 41 \u221a" FROM "table_79908" WHERE "D 44 O" = 'r 13'