-er -ic b-u bbb bbc bbd bbe bbi bbo bbr bbt bbu bcb bcc bcd bce bci bco bcr bct bcu bdb bdc bdd bde bdi bdo bdr bdt bdu be- beb bec bed bee bei beo ber bet beu bi- bib bic bid bie bii bio bir bit biu bob boc bod boe boi boo bor bot bou brb brd bre bri bro brr brt bru btb btc btd bte bti bto btr btt btu bub buc bud bue bui buo bur but buu c-- cbb cbc cbd cbe cbi cbo cbr cbt cbu ccb ccc ccd cce cci cco ccr cct ccu cdb cdc cdd cde cdi cdo cdr cdt cdu ce- ceb cec ced cee cei ceo cer cet ceu ci- cib cic cid cie cii cio cir cit ciu co- cob coc cod coe coi coo cor cot cou crb crc crd cre cri cro crr crt cru ctb ctc ctd cte cti cto ctr ctt ctu cub cuc cud cue cui cuo cur cut cuu dbb dbc dbd dbe dbi dbo dbr dbt dbu dcb dcc dcd dce dci dco dcr dct dcu ddb ddc ddd dde ddi ddo ddr ddt ddu de- deb dec ded dee dei deo der det deu di- dib dic did die dii dio dir dit diu dob doc dod doe doi doo dor dot dou drb drc drd dre dri dro drr drt dru dtb dtc dtd dte dti dto dtr dtt dtu dub duc dud due dui duo dur dut ebb ebc ebd ebe ebi ebo ebr ebt ebu ec- ecb ecc ecd ece eci eco ecr ect ecu ed- edb edc edd ede edi edo edr edt edu eeb eec eed eee eeo eer eet eib eic eid eie eii eio eir eit eiu eo- eob eoc eod eoe eoi eoo eor eot eou erb erc erd ere eri ero err ert eru etb etc etd ete eti eto etr ett etu eu- eub euc eud eue eui eur eut i-d ibb ibc ibd ibe ibi ibo ibr ibt ibu icb icc icd ice ici ico icr ict icu idb idc idd ide idi ido idr idt idu ie- iec ied iee iei ier iet iib iic iid iie iii iio iir iit iiu io- iob ioc iod ioe ioi ioo ior iot iou ir- irb irc ird ire iri iro irr irt iru itb itc itd ite iti ito itt itu iu- iub iuc iud iue iui iur iut o-i ob- obb obc obd obe obi obo obr obt obu oc- ocb occ ocd oci oco ocr oct ocu odb odc odd ode odi odo odr odt odu oeb oec oed oee oei oeo oer oet oib oic oid oie oii oio oir oit oiu oo- oob ooc ood ooi ooo oor oot or- orb orc ord ore ori oro orr ort oru ot- otb otc otd ote oti oto otr ott otu ou- ouc oud oue oui ouo our out rbb rbc rbd rbe rbi rbo rbr rbt rbu rcb rcc rcd rce rci rco rcr rct rcu rdb rdc rdd rde rdi rdo rdr rdt rdu re- reb rec red ree rei reo rer ret reu rib ric rid rie rii rio rir rit rob roc rod roe roi roo ror rot rou rrb rrc rrd rri rrr rrt rru rtb rtc rtd rte rti rto rtr rtt rtu rub ruc rud rue rui ruo rur rut ruu tbb tbc tbd tbe tbi tbo tbr tbt tbu tcb tcc tcd tce tci tco tcr tct tcu tdb tdc tdd tde tdi tdo tdr tdt tdu te- teb tec ted tee tei teo ter tet teu tib tic tid tie tii tio tir tit tiu to- tob toc tod toe toi too tor tot tou trb trc trd tre tri tro trr trt tru ttb ttc ttd tte tti tto ttr ttt ttu tub tuc tud tue tui tuo tur tut tuu ubb ubc ube ubi ubo ubr ubt ubu ucb ucc ucd uce uci uco ucr uct ucu udb udc udd ude udi udo udr udt udu ueb uec ued uee uei uer uet uib uic uid uie uii uio uir uit uiu uob uoc uod uoe uoo uor uot ur- urb urc urd ure uri uro urr urt uru utb utc utd ute uti uto utr utt utu uuc uue uur uut uuu