compruebecomprueben

Compruebecomprueben is not a standard lexical item in Spanish. It is the concatenation of two present subjunctive forms of the verb comprobar: compruebe and comprueben.

Conjugation: comprobar is an -ar verb. In the present subjunctive its forms are: yo compruebe, tú compruebes, él/ella/usted compruebe, nosotros comprobemos, vosotros comprobéis, ellos/ellas/ustedes comprueben. The -ue stem change is preserved in the present subjunctive.

Uses: The present subjunctive is used in dependent clauses after expressions of doubt, possibility, desire, or necessity, and in formal commands. Examples include: “Es posible que él compruebe los datos,” “Espero que tú compruebes la información,” and the formal imperative: “Compruebe usted los documentos” or “Comprueben ustedes los resultados.”

Grammar note: compruebe is compatible with first-person singular in some constructions (for example, in subordinate clauses where the subject is implicit), but in standard grammar it most commonly appears as a form for él/ella/usted and yo in present subjunctive, while comprueben is the plural form for ellos/ellas/ustedes.

In summary, compruebecomprueben is a convenient way to reference the pair of present subjunctive forms of comprobar used in singular and plural contexts, particularly in subordinate clauses and formal commands.