Frequent Communion

© Marie-Lan Nguyen / Wikimedia Commons / CC-BY 2.5

 "Qui tribus dominicis non communicaverint, excommunicantur."

"Those who have not partaken of Holy Communion for three Sundays [running] are excommunicated." 

     The c. 8th-century Bigotian Penitential, as quoted by Fr. Edmond Dublanchy, S.M., citing Die Bussordnungen der abendländischen Kirche, ed. Wasserschleben (Halle:  1851), 448, in "Communion eucharistique. II. Communion fréquente,” in Dictionnaire de théologie catholique 3 (1908), col. 522 (cols. 515-552).  Cf. The Irish penitentials, ed. Bieler & Binchy, Scriptores Latini Hiberniae 5 (Dublin:  Dublin Institute for Advanced Studies, 1963).
     communicaverit is PAS3P.  Cf. Penitential of Theodore I.xii.1, as quoted in the DMLBS, sv communicare:  "qui iij Dominicis non [communic]averint, excommunicentur" (excommunicentur being pPS3P).
     Presumably that "Qui" would have to be "Worthies who".  I.e. presumably in context it would not be directed against those who, say, haven't been able to get to confession.