Study a single sutra by selecting the pada (chapter) and then the sutra (verse).
Source: English translation from Light on the Yoga Sutras of Patanjali (B.K.S. Iyengar)
The five afflictions which disturb the equilibrium of consciousness are: ignorance or lack of wisdom, ego, pride of the ego or the sense of 'I', attachment to pleasure, aversion to pain, fear of death and clinging to life.
Source: How to Know God: The Yoga Aphorisms of Patanjali (Swami Prabhavananda, Christopher Isherwood)
These obstacles -- the causes of man's sufferings -- are ignorance, egoism, attachment, aversion, and the desire to cling to life.
Source: English translation of the Yoga Sutras of Patanjali (Swami Jnaneshvara Bharati)
There are five kinds of coloring (kleshas): 1) forgetting, or ignorance about the true nature of things (avidya), 2) I-ness, individuality, or egoism (asmita), 3) attachment or addiction to mental impressions or objects (raga), 4) aversion to thought patterns or objects (dvesha), and 5) love of these as being life itself, as well as fear of their loss as being death.