ud1.3:2.1 “So, when this exists, this comes to be; due to the arising of this, this arises.
ud1.3:2.2 When this doesn’t exist, this doesn’t come to be; due to the cessation of this, this ceases. That is:
ud1.3:2.3 Ignorance is a requirement for choices.
ud1.3:2.4 Choices are a requirement for consciousness.
ud1.3:2.5 Consciousness is a requirement for name and form.
ud1.3:2.6 Name and form are requirements for the six sense fields.
ud1.3:2.7 The six sense fields are requirements for contact.
ud1.3:2.8 Contact is a requirement for feeling.
ud1.3:2.9 Feeling is a requirement for craving.
ud1.3:2.10 Craving is a requirement for grasping.
ud1.3:2.11 Grasping is a requirement for continued existence.
ud1.3:2.12 Continued existence is a requirement for rebirth.
ud1.3:2.13 Rebirth is a requirement for old age and death, sorrow, lamentation, pain, sadness, and distress to come to be.
ud1.3:2.14 That is how this entire mass of suffering originates.