pulsar

The imperfect subjunctive (pulsara/pulsase) is for past hypotheticals or wishes, like 'Si pulsara el botón...'.

Use the present subjunctive (pulse, pulsemos) after expressions of doubt, desire, or emotion, like 'Espero que pulses el botón'.

Negative commands use 'no' + present subjunctive, e.g., 'no pulses el botón'.

Use 'pulsa' (tú) and 'pulse' (usted) for direct commands, like 'pulsa el botón'.

The conditional 'pulsaría' is for hypotheticals ('would press') or polite requests, like 'Pulsaría el botón si pudiera'.

The preterite of pulsar is regular: 'pulsé', 'pulsaste', 'pulsó', 'pulsamos', 'pulsasteis', 'pulsaron' for completed actions.

The imperfect 'pulsaba' describes ongoing or habitual past actions, like 'Yo pulsaba el botón a menudo'.

The present tense 'pulso', 'pulsas', 'pulsa' describes current actions or habits.

The future tense 'pulsaré', 'pulsarás' indicates actions that will happen, like 'Pulsaré el botón mañana'.