 Complete the following phrase:  Joans earliest work is , a planh composed on the death of Amalric I of Narbonne 1270. In 1284 he wrote , a lament for the bloody incident that marred the feast of the Ascension in Béziers that year. In 1286 he composed his most historically interesting work, , the metre and rhyme of which are identical to that of Peridgons . This was written in 1286, after the occasion of the Battle of Les Formigues in which Guilhem de Lodeva had been captured and imprisoned in Barcelona by the Aragonese, with which the French 