CREATE TABLE table_204_510 (id DECIMAL, "team 1" TEXT, "agg." TEXT, "team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

which team is previous to cska moscow on team 1
SELECT "team 1" FROM table_204_510 WHERE id = (SELECT id FROM table_204_510 WHERE "team 1" = 'cska moscow') - 1
SELECT "team 1" FROM "table_204_510" WHERE "id" = (SELECT "id" FROM "table_204_510" WHERE "team 1" = 'cska moscow') - 1