What is the standard present pattern of Form VII?

Characteristics of Form VII (Infiʿāl): Intransitivity, Manifestation, Resulting Action, Equivalence, Root Restrictions and Independent Use

• يَفْتَعِلُ
• يُفَعِّلُ
• يَسْتَفْعِلُ
• يَنْفَعِلُ