Conjugate c>zc verbs -cer/-cir in El presente de Subjuntivo (present subjunctive)

In Spanish, the  -c- changes to a -zc- in El Presente just for the yo form for many verbs that end in -cer/-cir that are preceded by a vowel. These verbs keep the same irregularity in El Presente de Subjuntivo but in this conjugation the irregularity is kept in all forms.

Have a look at these two verbs conjugations in El Presente de Subjuntivo: conocer and producir 

The endings are the same as for regular -er and -ir verbs in El Presente de Subjuntivo.

Here are some examples:

Other -cer and -cir verbs have a different consonant change.

See also:

• Conjugate c>z -cer/-cir verbs in El Presente de Subjuntivo (present subjunctive)
• Verb list: Irregular -ducir verbs