-ic bbb bbc bbd bbe bbi bbo bcb bcc bcd bce bci bco bcv bdb bdc bdd bde bdi bdo bdv be- beb bec bed bee bei beo bev bi- bib bic bid bie bii bio biv bob boc bod boe boi boo bov bvb bvc bvd bve bvi bvo bvv c-- cbb cbc cbd cbe cbi cbo cbv ccb ccc ccd cce cci cco ccv cdb cdc cdd cde cdi cdo cdv ce- ceb cec ced cee cei ceo cev ci- cib cic cid cie cii cio civ co- cob coc cod coe coi coo cov cvb cvc cvd cve cvi cvo cvv dbb dbc dbd dbe dbi dbo dbv dcb dcc dcd dce dci dco dcv ddb ddc ddd dde ddi ddo de- deb dec ded dee dei deo dev di- dib dic did die dii dio div dob doc dod doe doi doo dov dvb dvc dvd dve dvi ebb ebc ebd ebe ebi ebo ebv ec- ecb ecc ecd ece eci eco ecv ed- edb edc edd ede edi edo eeb eec eed eee eeo eev eib eic eid eie eii eio eiv eo- eob eoc eod eoe eoi eoo evb evc evd eve evi evo evv i-d i-v ibb ibc ibd ibe ibi ibo ibv icb icc icd ice ici ico icv idb idc idd ide idi ido idv ie- iec ied iee iei iev iib iic iid iie iii iio io- iob ioc iod ioe ioi ioo iov ivb ivc ivd ive ivi ivo ivv o-i ob- obb obc obd obe obi obo obv oc- ocb occ ocd oci oco ocv odb odc odd ode odi odo odv oeb oec oed oee oei oeo oib oic oid oie oii oio oiv oo- oob ooc ood ooi ooo oov ov- ovb ovc ovd ove ovi ovo ovv v-e vbc vbd vbi vbo vbv vcc vcd vce vci vco vdb vdc vdd vde vdi vdo vdv veb vec ved vee vei veo vi- vib vic vid vie vii vio viv vob voc vod voe voi voo vov vvb vvc vvi vvo vvv