-ic bbb bbc bbd bbe bbi bbn bbt bcb bcc bcd bce bci bcn bct bcv bdb bdc bdd bde bdi bdt bdv be- beb bec bed bee bei ben bet bev bi- bib bic bid bie bii bin bit biv bnb bnc bnd bne bni bnn bnt bnv btb btc btd bte bti btn btt btv bvb bvc bvd bve bvi bvn bvt bvv c-- cbb cbc cbd cbe cbi cbn cbt cbv ccb ccc ccd cce cci ccn cct ccv cdb cdc cdd cde cdi cdn cdt cdv ce- ceb cec ced cee cei cen cet cev ci- cib cic cid cie cii cin cit civ cn- cnb cnc cnd cne cni cnn cnt cnv ctb ctc ctd cte cti ctn ctt ctv cvb cvc cvd cve cvi cvn cvt cvv dbb dbc dbd dbe dbi dbn dbt dbv dcb dcc dcd dce dci dcn dct dcv ddb ddc ddd dde ddi ddn ddt de- deb dec ded dee dei den det dev di- dib dic did die dii din dit div dnb dnc dnd dne dni dnn dnt dtb dtc dtd dte dti dtn dtt dtv dvb dvc dvd dve dvi dvn dvt ebb ebc ebd ebe ebi ebn ebt ebv ec- ecb ecc ecd ece eci ecn ect ecv ed- edb edc edd ede edi edn edt eeb eec eed eee een eet eev eib eic eid eie eii ein eit eiv en- enb enc end ene eni enn ent env etb etc etd ete eti etn ett etv evb evc evd eve evi evn evt evv i-d i-v ibb ibc ibd ibe ibi ibn ibt ibv icb icc icd ice ici icn ict icv idb idc idd ide idi idn idt idv ie- iec ied iee iei ien iet iev iib iic iid iie iii iin iit in- inb inc ind ine ini inn int inv itb itc itd ite iti itn itt itv ivb ivc ivd ive ivi ivt ivv n-i nbb nbc nbd nbe nbi nbn nbt nbv ncb ncc ncd nce nci ncn nct ncv ndb ndc ndd nde ndi ndn ndt ndv ne- neb nec ned nee nei nen net nev nib nic nid nie nii nin nit niv nnb nnc nne nni nnn nnt nnv ntb ntc ntd nte nti ntn ntt ntv nvb nvc nvd nve nvi nvn nvt nvv tbb tbc tbd tbe tbi tbn tbt tbv tcb tcc tcd tce tci tcn tct tcv tdb tdc tdd tde tdi tdn tdt tdv te- teb tec ted tee tei ten tet tev tib tic tid tie tii tin tit tiv tnb tnc tnd tne tni tnn tnt ttb ttc ttd tte tti ttn ttt ttv tvb tvc tvd tve tvi tvn tvt v-e vbc vbd vbi vbv vcc vcd vce vci vcn vct vdb vdc vdd vde vdi vdt vdv veb vec ved vee vei ven vet vi- vib vic vid vie vii vin vit viv vn- vnd vni vnv vtb vtc vte vti vtt vtv vvb vvc vvi vvt vvv