Paticca-samuppada

Anguttara Nikaya 3:61:

It is with ignorance (avijja) as a condition
that formations (sankhara) come to be;
with formations as a condition,
consciousness (vinnana) comes to be;
with consciousness as a condition,
name and form (nama-rupa) come to be;
with name and form as a condition,
the six bases (salayatana) come to be;
with the six bases as a condition,
contact (phassa) comes to be;
with contact as a condition,
feeling (vedana) comes to be;
with feeling as a condition,
desire (tanha) comes to be;
with desire as a condition,
clinging (upadana) comes to be;
with clinging as a condition,
being (bhava) comes to be;
with being as a condition,
birth (jati) comes to be;
with birth as a condition,
aging and death (jara-marana) come to be,
and also sorrow and lamentation, pain, grief and despair;
that is how there is an origin to this whole mass of suffering (dukkha).
This is called the Noble Truth of the Origin of Suffering.