Dessein summarises the information given by Zhisheng in KYL T2154:55.649b23-c6: four titles resembling that of the *Saṃyuktābhidharmahṛdaya are supposed to have been produced at various times, of which Zhisheng identifies as extant only T1551, ascribed to Guṇavarman (supposed to have been based in part on the earlier partial false start by Īśvara). The four are: 阿毘曇心, Saṃghadeva 僧伽提婆; 雜阿毘曇心, Faxian and 法顯 Buddhabhadra 覺賢; 雜阿毘曇心十, Īśvara 伊葉波羅 "et al." 等 [including Guṇavarman 求那跋摩]; "雜心", Saṃghavarman 僧伽䟦摩. Dessein remarks, after Willemen, that it is unlikely that the Saṃghadeva text in question was the same work as T1551.