CREATE TABLE table_51810 ("Name" TEXT, "Built" TEXT, "Wheels" TEXT, "Fuel/ Trans" TEXT, "Status" TEXT, "Colour" TEXT)

What is found in the Built column of the locomotive with 0-4-0 wheels that is still in service?
SELECT "Built" FROM table_51810 WHERE "Wheels" = '0-4-0' AND "Status" = 'in service'
SELECT "Built" FROM "table_51810" WHERE "Status" = 'in service' AND "Wheels" = '0-4-0'