a-a a-b a-i aaa aab aad aaf aag aai aao aar aas ab- aba abb abd abf abg abi abo abr abs ad- ada adb add adf adg adi ado adr ads af- afa afb afd aff afg afi afo afr afs ag- aga agb agd agf agg agi ago agr ags ai- aia aib aid aif aig aii aio air ais aoa aob aod aof aog aoi aoo aor aos ar- ara arb ard arf arg ari aro arr ars as- asa asb asd asf asg asi aso asr ass baa bab bad baf bag bai bao bar bas bba bbb bbd bbf bbg bbi bbo bbr bbs bda bdb bdd bdf bdg bdi bdo bdr bds bfa bfb bfd bff bfg bfi bfo bfr bfs bga bgb bgd bgf bgg bgi bgo bgr bgs bi- bia bib bid bif big bii bio bir bis boa bob bod bof bog boi boo bor bos bra brb brd brf brg bri bro brr brs bsa bsb bsd bsf bsg bsi bso bsr bss daa dab dad daf dag dai dao dar das dba dbb dbd dbf dbg dbi dbo dbr dbs dda ddb ddd ddf ddg ddi ddo ddr dds dfa dfb dfd dff dfg dfi dfo dfr dfs dga dgd dgf dgg dgi dgr dgs di- dia dib did dif dig dii dio dir dis doa dob dod dof dog doi doo dor dos dra drb drd drg dri dro drr drs dsa dsb dsd dsf dsg dsi dso dsr dss faa fab fad faf fag fai fao far fas fba fbb fbd fbf fbg fbi fbo fbr fbs fda fdb fdd fdf fdg fdi fdo fdr fds ffa ffd fff ffg ffi ffo ffr ffs fga fgb fgd fgf fgg fgi fgr fgs fia fib fid fif fig fii fir fis foa fob fof fog foi foo for fos fra frb frd frf frg fri fro frr frs fsa fsb fsd fsf fsg fsi fso fsr fss g-d gaa gab gad gaf gag gai gao gar gas gba gbd gbf gbg gbi gbo gbr gbs gda gdb gdd gdf gdi gdo gdr gds gfa gfb gfd gff gfi gfo gfr gfs gga ggb ggd ggg ggi ggo ggr ggs gia gib gid gif gig gii gio gir gis goa gob god gof gog goi goo gor gos gra grb grd grf grg gri gro grr grs gsa gsb gsd gsf gsg gsi gso gsr gss i-d i-f ia- iaa iab iad iaf iag iai iao iar ias iba ibb ibd ibf ibg ibi ibo ibr ibs ida idb idd idf idg idi ido idr ids ifa ifb ifd iff ifg ifi ifo ifr ifs iga igb igd igf igg igi igo igr igs iia iib iid iif iii iio iir iis io- ioa iob iod iof iog ioi ioo ior ios ir- ira irb ird irf irg iri iro irr irs is- isa isb isd isf isg isi iso isr iss o-i oaa oab oad oaf oag oai oao oar oas ob- oba obb obd obf obg obi obo obr obs oda odb odd odf odg odi odo odr ods of- ofa ofb ofd off ofg ofi ofo ofr ofs oga ogd ogf ogg ogi ogo ogs oia oib oid oif oii oio oir ois oo- ooa oob ood oof oog ooi ooo oor oos or- ora orb ord orf org ori oro orr ors os- osa osb osd osf osg osi oso osr oss ra- raa rab rad raf rag rai rao rar ras rba rbb rbd rbf rbg rbi rbo rbr rbs rda rdb rdd rdf rdg rdi rdo rdr rds rfa rfb rfd rff rfg rfi rfo rfr rfs rga rgb rgd rgf rgg rgi rgo rgr rgs ria rib rid rif rig rii rio rir ris roa rob rod rof rog roi roo ror ros rra rrb rrd rrf rrg rri rrr rrs rsa rsb rsd rsf rsg rsi rso rsr rss saa sab sad saf sag sai sao sar sas sba sbb sbd sbf sbg sbi sbo sbr sbs sda sdb sdd sdf sdg sdi sdo sdr sds sfa sfb sfd sff sfg sfi sfo sfr sfs sga sgb sgd sgf sgg sgi sgo sgr sgs sia sib sid sif sig sii sio sir sis soa sob sod sof sog soi soo sor sos sr- sra srb srd srf srg sri sro srr srs ss- ssa ssb ssd ssf ssg ssi sso ssr sss

a-do a-ii aaaa aaab aaad aaaf aaai aaar aaas aaba aabb aabd aabi aada aadi aads aafa aafb aafd aaff aafi aaib aaii aais aaoo aara aard aari aaro aars aasa aasd aasf aasi aass abaa abab abad abaf abag abai abar abas abb- abba abbb abbi abbo abbr abbs abda abdi abdo abff abgd abia abib abid abig abir abis aboa abob abod abof aboo abor abos abra abri abro abrs abs- absa absd absf absi abss adaa adab adad adag adai adao adar adas adba adbi adda addd addi addo addr adds adfa adfs adgs adia adib adif adig adio adir adis adob adod adog adoo ador ados adra adro adrs adsa adsi adso adsr adss afaa afad afao afar afbs afdb affa affi affo affs afgf afia afib afid afif afig afir afis afoa afog afoo afor afr- afra afri afro afrs afsa afsb ag-o agad agag agai agao agar agas agba agbo agda agfa agga aggi agia agib agid agig agii agio agir agis agob agod agog agoo agos agra agri agro agsa agsg aiai aias aiba aibo aida aidb aidi aidr aids aifd aiff aifs aiga aigo aiia aiib aiid aiir aioi aira aird airi airo airs aisa aisb aisd aisg aisi aiso aisr aoba aora aorb aors aosd aoss arab arad araf arag arai arar aras arba arbi arbs arda ardf ardi ardo ards arfa arfb arff arfs arga argb argi argo args aria arib arid arif arig arii ario aris aroa arob arod aroi aroo aror aros arr- arra arrg arri arro