-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aao aar aat aau ab- aba abb abc abd abe abi abo abr abt abu ac- aca acb acc acd ace aci aco acr act acu ad- ada adb adc add ade adi ado adr adt adu aea aeb aec aed aee aei aeo aer aet aeu ai- aia aib aic aid aie aii aio air ait aiu aoa aob aoc aod aoe aoi aoo aor aot aou ar- ara arb arc ard are ari aro arr art aru at- ata atb atc atd ate ati ato atr att atu au- aua aub auc aud aue aui auo aur aut b-u baa bab bac bad bae bai bao bar bat bau bba bbb bbc bbd bbe bbi bbo bbr bbt bbu bca bcb bcc bcd bce bci bco bcr bct bcu bda bdb bdc bdd bde bdi bdo bdr bdt bdu be- bea beb bec bed bee bei beo ber bet beu bi- bia bib bic bid bie bii bio bir bit biu boa bob boc bod boe boi boo bor bot bou bra brb brd bre bri bro brr brt bru bta btb btc btd bte bti bto btr btt btu bua bub buc bud bue bui buo bur but buu c-- caa cab cac cad cae cai cao car cat cau cba cbb cbc cbd cbe cbi cbo cbr cbt cbu cca ccb ccc ccd cce cci cco ccr cct ccu cda cdb cdc cdd cde cdi cdo cdr cdt cdu ce- cea ceb cec ced cee cei ceo cer cet ceu ci- cia cib cic cid cie cii cio cir cit ciu co- coa cob coc cod coe coi coo cor cot cou cra crb crc crd cre cri cro crr crt cru cta ctb ctc ctd cte cti cto ctr ctt ctu cua cub cuc cud cue cui cuo cur cut cuu daa dab dac dad dae dai dao dar dat dau dba dbb dbc dbd dbe dbi dbo dbr dbt dbu dca dcb dcc dcd dce dci dco dcr dct dcu dda ddb ddc ddd dde ddi ddo ddr ddt ddu de- dea deb dec ded dee dei deo der det deu di- dia dib dic did die dii dio dir dit diu doa dob doc dod doe doi doo dor dot dou dra drb drc drd dre dri dro drr drt dru dta dtb dtc dtd dte dti dto dtr dtt dtu dua dub duc dud due dui duo dur dut eaa eab eac ead eae eai eao ear eat eau eba ebb ebc ebd ebe ebi ebo ebr ebt ebu ec- eca ecb ecc ecd ece eci eco ecr ect ecu ed- eda edb edc edd ede edi edo edr edt edu eea eeb eec eed eee eeo eer eet eia eib eic eid eie eii eio eir eit eiu eo- eoa eob eoc eod eoe eoi eoo eor eot eou era erb erc erd ere eri ero err ert eru eta etb etc etd ete eti eto etr ett etu eu- eua eub euc eud eue eui eur eut i-d ia- iaa iab iac iad iae iai iao iar iat iau iba ibb ibc ibd ibe ibi ibo ibr ibt ibu ica icb icc icd ice ici ico icr ict icu ida idb idc idd ide idi ido idr idt idu ie- iea iec ied iee iei ier iet iia iib iic iid iie iii iio iir iit iiu io- ioa iob ioc iod ioe ioi ioo ior iot iou ir- ira irb irc ird ire iri iro irr irt iru ita itb itc itd ite iti ito itt itu iu- iua iub iuc iud iue iui iur iut o-i oaa oab oac oad oae oai oao oar oat oau ob- oba obb obc obd obe obi obo obr obt obu oc- oca ocb occ ocd oci oco ocr oct ocu oda odb odc odd ode odi odo odr odt odu oea oeb oec oed oee oei oeo oer oet oia oib oic oid oie oii oio oir oit oiu oo- ooa oob ooc ood ooi ooo oor oot or- ora orb orc ord ore ori oro orr ort oru ot- ota otb otc otd ote oti oto otr ott otu ou- oua ouc oud oue oui ouo our out ra- raa rab rac rad rae rai rao rar rat rau rba rbb rbc rbd rbe rbi rbo rbr rbt rbu rca rcb rcc rcd rce rci rco rcr rct rcu rda rdb rdc rdd rde rdi rdo rdr rdt rdu re- rea reb rec red ree rei reo rer ret reu ria rib ric rid rie rii rio rir rit roa rob roc rod roe roi roo ror rot rou rra rrb rrc rrd rri rrr rrt rru rta rtb rtc rtd rte rti rto rtr rtt rtu rua rub ruc rud rue rui ruo rur rut ruu taa tab tac tad tae tai tao tar tat tau tba tbb tbc tbd tbe tbi tbo tbr tbt tbu tca tcb tcc tcd tce tci tco tcr tct tcu tda tdb tdc tdd tde tdi tdo tdr tdt tdu te- tea teb tec ted tee tei teo ter tet teu tia tib tic tid tie tii tio tir tit tiu to- toa tob toc tod toe toi too tor tot tou tra trb trc trd tre tri tro trr trt tru tta ttb ttc ttd tte tti tto ttr ttt ttu tua tub tuc tud tue tui tuo tur tut tuu ua- uaa uab uac uad uae uai uao uar uat uau uba ubb ubc ube ubi ubo ubr ubt ubu uca ucb ucc ucd uce uci uco ucr uct ucu uda udb udc udd ude udi udo udr udt udu uea ueb uec ued uee uei uer uet uia uib uic uid uie uii uio uir uit uiu uoa uob uoc uod uoe uoo uor uot ur- ura urb urc urd ure uri uro urr urt uru uta