Which statement about قَيْلُولَةٌ is correct?

Noun Patterns: Jāmid, Maṣdar, Mushtaq and 50 Basic-Triliteral Maṣdar Entries

• It illustrates an extended maṣdar template for a basic verb
• It cannot be a verbal noun
• It is only a quadriliteral past verb
• It must have faʿl as its pattern