{HEAD ~ Preferred pigments} are quinacridone pigments, disazo condensation pigments, {TAIL ~ isoindolinone pigments} and pyrrolopyrrole pigments with pyrrolopyrrole pigments being especially preferred 
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{ HEAD ~ Preferred pigments } are quinacridone pigments , disazo condensation pigments , { TAIL ~ isoindolinone pigments } and pyrrolopyrrole pigments with pyrrolopyrrole pigments being especially preferred
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