bbb bbc bbd bbe bbo bcb bcc bcd bce bco bcv bdb bdc bdd bde bdo bdv be- beb bec bed bee beo bev bob boc bod boe boo bov bvb bvc bvd bve bvo bvv c-- cbb cbc cbd cbe cbo cbv ccb ccc ccd cce cco ccv cdb cdc cdd cde cdo cdv ce- ceb cec ced cee ceo cev co- cob coc cod coe coo cov cvb cvc cvd cve cvo cvv dbb dbc dbd dbe dbo dbv dcb dcc dcd dce dco dcv ddb ddc ddd dde ddo de- deb dec ded dee deo dev dob doc dod doe doo dov dvb dvc dvd dve ebb ebc ebd ebe ebo ebv ec- ecb ecc ecd ece eco ecv ed- edb edc edd ede edo eeb eec eed eee eeo eev eo- eob eoc eod eoe eoo evb evc evd eve evo evv ob- obb obc obd obe obo obv oc- ocb occ ocd oco ocv odb odc odd ode odo odv oeb oec oed oee oeo oo- oob ooc ood ooo oov ov- ovb ovc ovd ove ovo ovv v-e vbc vbd vbo vbv vcc vcd vce vco vdb vdc vdd vde vdo vdv veb vec ved vee veo vob voc vod voe voo vov vvb vvc vvo vvv