ddd ddg ddi ddn ddx dgd dgg dgi dgn di- did dig dii din dix dnd dng dni dnn dxd dxi dxn dxx g-d gdd gdi gdn gdx ggd ggg ggi ggn gid gig gii gin gnd gni gnn i-d idd idg idi idn idx igd igg igi ign iid iii iin iix in- ind ing ini inn inx ixi ixn n-i ndd ndg ndi ndn ngd ngg ngi ngn nid nig nii nin nix nng nni nnn nxd xdi xgi xii xin xix xxi xxx