CREATE TABLE table_79907 ("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 45 O with D 46 O of r 31
SELECT "D 45 O" FROM table_79907 WHERE "D 46 O" = 'r 31 √'
SELECT "D 45 O" FROM "table_79907" WHERE "D 46 O" = 'r 31 √'