About the embedding of cohesive elements between solid elements using Matlab program

Good mouring Imechanica's users, i have a question about the cohesive elements and thier embedding in a finite element mesh, i have a 2D mesh created in Matlab with the Nodes numbering and their coordinates and the elements numbering and their connectivities, all these Datas in vectors and matrices, the element type is a four noded linear quadrilateral elements, the mesh is not regular in general, i would like to embed cohesive elements between some or all elements in the mesh, mean that each element is surounded by cohesive zero thickness elements over all its four edges, so could any one kindly give us some guidlines to do that on Matlab and using Matlab's capabilities that would be appreciated. thanks