Across the Northern and Southern borders of the line separating the Northern dialects from the Southern ones, there is a transitional area picking up linguistic phenomena associated with either of the two groups, with some local peculiarities. Along the Northern line are the dialects around Piana and Calcatoggio, from Cinarca with Vizzavona (which form the conditional tense like in the South), and Fiumorbo through Ghisonaccia and Ghisoni, which have the retroflex sound (written "-dd-") for historical ; along the Southern line, the dialects of Ajaccio (retroflex "-dd-", realized as -"ghj"-, feminine plurals ending in "i", some Northern words like "cane" and "accattà" instead of "ghjacaru" and "cumprà", as well as "ellu"/"ella" and not "eddu"/"edda"; minor variations: "sabbatu" > "sabbitu", "u li dà" > "ghi lu dà"; final syllables often stressed and truncated: "marinari" > "marinà", > "panattè", "castellu" > "castè", "cuchjari" > "cuchjà"), the Gravona area, Bastelica (which would be classified as Southern, but is also noted for its typical rhotacism: "Basterga") and Solenzara, which did not preserve the Latin short vowels: "seccu", "peru", "rossu", "croci", "pozzu").