 Mkhedruli inscriptions of the 10th and 11th centuries are characterized in rounding of angular shapes of Nuskhuri letters and making the complete outlines in all of its letters . Mkhedruli letters are written in the four @-@ linear system , similar to Nuskhuri . Mkhedruli becomes more round and free in writing . It breaks the strict frame of the previous two alphabets , Asomtavruli and Nuskhuri . Mkhedruli letters begin to get coupled and more free calligraphy develops . 
