How to convert sql to linq using C#

Question

Hi , please Can someone help me ?

I have a sql query which I need to convert in LINQ

SELECT '1' REG FROM a WHERE tipo LIKE 'DEPOSITO%' AND id IN (SELECT secuencia FROM b WHERE formulario = 'D1526' AND num = ' 123456789 ')

UNION ALL

SELECT '1' REG FROM a WHERE tipo LIKE 'DEPOSITO%' AND id IN(SELECT secuencia FROM b WHERE formulario_padre = 'D1526')

UNION ALL

SELECT '1' REG FROM c WHERE uti<>0 AND formulario='D1526';