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