-ic bbb bbc bbe bbi bbn bbx bcb bcc bce bci bcn bcv bcx be- beb bec bee bei ben bev bex bi- bib bic bie bii bin biv bix bnb bnc bne bni bnn bnv bnx bvb bvc bve bvi bvn bvv bxb bxi bxn bxx c-- cbb cbc cbe cbi cbn cbv cbx ccb ccc cce cci ccn ccv ccx ce- ceb cec cee cei cen cev cex ci- cib cic cie cii cin civ cix cn- cnb cnc cne cni cnn cnv cnx cvb cvc cve cvi cvn cvv cvx cxc cxi cxv cxx ebb ebc ebe ebi ebn ebv ebx ec- ecb ecc ece eci ecn ecv ecx eeb eec eee een eev eex eib eic eie eii ein eiv eix en- enb enc ene eni enn env evb evc eve evi evn evv ex- exc exe exi exx i-v ibb ibc ibe ibi ibn ibv ibx icb icc ice ici icn icv ie- iec iee iei ien iev iex iib iic iie iii iin iix in- inb inc ine ini inn inv inx ivb ivc ive ivi ivv ivx ixc ixe ixi ixn n-i nbb nbc nbe nbi nbn nbv nbx ncb ncc nce nci ncn ncv ncx ne- neb nec nee nei nen nev nex nib nic nie nii nin niv nix nnb nnc nne nni nnn nnv nvb nvc nve nvi nvn nvv nxc nxv v-e vbc vbi vbv vcc vce vci vcn vcx veb vec vee vei ven vex vi- vib vic vie vii vin viv vix vn- vni vnv vvb vvc vvi vvv vxv xbc xbe xbx xcb xci xcv xcx xee xen xev xex xic xie xii xin xiv xix xnc xvi xxi xxv xxx