a-a a-b a-t aaa aab aad aaf aaj aao aar aas aat ab- aba abb abd abf abj abo abr abs abt ad- ada adb add adf adj ado adr ads adt af- afa afb afd aff afj afo afr afs aft aja ajb ajd ajf ajj ajo ajr ajs ajt aoa aob aod aof aoj aoo aor aos aot ar- ara arb ard arf arj aro arr ars art as- asa asb asd asf asj aso asr ass ast at- ata atb atd atf ato atr ats att baa bab bad baf baj bao bar bas bat bba bbb bbd bbf bbo bbr bbs bbt bda bdb bdd bdf bdj bdo bdr bds bdt bfa bfb bfd bff bfj bfo bfr bfs bft bja bjd bjf bjj bjr bjs bjt boa bob bod bof boj boo bor bos bot bra brb brd brf brj bro brr brs brt bsa bsb bsd bsf bsj bso bsr bss bst bta btb btd btf bto btr bts btt daa dab dad daf daj dao dar das dat dba dbb dbd dbf dbo dbr dbs dbt dda ddb ddd ddf ddo ddr dds ddt dfa dfb dfd dff dfj dfo dfr dfs dft dj- dja djb djd djf djo djs djt doa dob dod dof doj doo dor dos dot dra drb drd drj dro drr drs drt dsa dsb dsd dsf dsj dso dsr dss dst dta dtb dtd dtf dtj dto dtr dts dtt faa fab fad faf faj fao far fas fat fba fbb fbd fbf fbo fbr fbs fbt fda fdb fdd fdf fdj fdo fdr fds fdt ffa ffd fff ffo ffr ffs fft fja fjb fjd fjs foa fob fof foo for fos fot fra frb frd frf frj fro frr frs frt fsa fsb fsd fsf fsj fso fsr fss fst fta ftb ftd ftf fto ftr fts ftt j-d jaa jab jad jaf jaj jao jar jas jat jba jbf jbj jbo jbr jbs jbt jda jdb jdf jdo jdr jds jdt jfa jfb jfd jff jfj jfo jfr jfs jft jja jjb jjf jjj jjr jjs joa job jod jof joj joo jor jos jot jra jrb jrf jro jrr jrs jrt jsa jsb jsd jsf jsj jso jsr jss jst jta jtb jtf jtr jts jtt oaa oab oad oaf oaj oao oar oas oat ob- oba obb obd obf obj obo obr obs obt oda odb odd odf odo odr ods odt of- ofa ofb ofd off ofo ofr ofs oft oja ojb ojd ojo ojs oo- ooa oob ood oof ooo oor oos oot or- ora orb ord orf oro orr ors ort os- osa osb osd osf osj oso osr oss ost ot- ota otb otd otf oto otr ots ott ra- raa rab rad raf raj rao rar ras rat rba rbb rbd rbf rbo rbr rbs rbt rda rdb rdd rdf rdj rdo rdr rds rdt rfa rfb rfd rff rfj rfo rfr rfs rft rja rjf rjr roa rob rod rof roj roo ror ros rot rra rrb rrd rrf rrr rrs rrt rsa rsb rsd rsf rsj rso rsr rss rst rta rtb rtd rtf rtj rto rtr rts rtt saa sab sad saf saj sao sar sas sat sba sbb sbd sbf sbj sbo sbr sbs sbt sda sdb sdd sdf sdj sdo sdr sds sdt sfa sfb sfd sff sfj sfo sfr sfs sft sja sjb sjd sjf sjj sjr sjs sjt soa sob sod sof soj soo sor sos sot sr- sra srb srd srf srj sro srr srs srt ss- ssa ssb ssd ssf ssj sso ssr sss sst sta stb std stf stj sto str sts stt taa tab tad taf taj tao tar tas tat tba tbb tbd tbf tbj tbo tbr tbs tbt tda tdb tdd tdf tdo tdr tds tdt tfa tfb tfd tff tfj tfo tfr tfs tft tjd tjf tjo tjr tjs to- toa tob tod tof toj too tor tos tot tra trb trd trf tro trr trs trt tsa tsb tsd tsf tsj tso tsr tss tst tta ttb ttd ttf tto ttr tts ttt