-al -ol -th a-a a-b a-c a-t aaa aab aac aad aaf aah aal aao aar aat ab- aba abb abc abd abf abh abl abo abr abt ac- aca acb acc acd acf ach acl aco acr act ad- ada adb adc add adf adh adl ado adr adt af- afa afb afc afd aff afh afl afo afr aft aha ahb ahc ahd ahf ahh ahl aho ahr aht al- ala alb alc ald alf alh all alo alr alt aoa aob aoc aod aof aoh aol aoo aor aot ar- ara arb arc ard arf arh arl aro arr art at- ata atb atc atd atf ath atl ato atr att baa bab bac bad baf bah bal bao bar bat bba bbb bbc bbd bbf bbh bbl bbo bbr bbt bca bcb bcc bcd bcf bch bcl bco bcr bct bda bdb bdc bdd bdf bdh bdl bdo bdr bdt bfa bfb bfc bfd bff bfh bfl bfo bfr bft bha bhb bhc bhd bhf bhh bhl bho bhr bht bla blb blc bld blf blh bll blo blr blt boa bob boc bod bof boh bol boo bor bot bra brb brd brf brh brl bro brr brt bta btb btc btd btf bth btl bto btr btt c-- caa cab cac cad caf cah cal cao car cat cba cbb cbc cbd cbf cbh cbl cbo cbr cbt cca ccb ccc ccd ccf cch ccl cco ccr cct cda cdb cdc cdd cdf cdh cdl cdo cdr cdt cfa cfb cfc cfd cff cfh cfl cfo cfr cft ch- cha chb chc chd chf chh chl cho chr cht cl- cla clb clc cld clf clh cll clo clr clt co- coa cob coc cod cof coh col coo cor cot cra crb crc crd crf crh crl cro crr crt cta ctb ctc ctd ctf cth ctl cto ctr ctt daa dab dac dad daf dah dal dao dar dat dba dbb dbc dbd dbf dbh dbl dbo dbr dbt dca dcb dcc dcd dcf dcl dco dcr dct dda ddb ddc ddd ddf ddh ddl ddo ddr ddt dfa dfb dfc dfd dff dfh dfl dfo dfr dft dh- dha dhb dhc dhd dhf dhh dhl dho dhr dht dl- dla dlb dlc dld dlf dlh dll dlo dlr dlt doa dob doc dod dof doh dol doo dor dot dra drb drc drd drl dro drr drt dta dtb dtc dtd dtf dth dtl dto dtr dtt faa fab fac fad faf fah fal fao far fat fba fbb fbc fbd fbf fbh fbl fbo fbr fbt fca fcb fcc fcd fcf fcl fco fcr fct fda fdb fdc fdd fdf fdh fdl fdo fdr fdt ffa ffc ffd fff ffh ffl ffo ffr fft fha fhb fhc fhf fhh fhl fho fhr fla flb flc fld flf fll flo flr flt foa fob foc fof foh fol foo for fot fra frb frc frd frf frh frl fro frr frt fta ftb ftc ftd ftf fth ftl fto ftr ftt haa hab hac had haf hah hal hao har hat hba hbb hbc hbd hbf hbh hbl hbo hbr hbt hca hcb hcc hcd hcf hch hcl hco hcr hct hda hdb hdc hdd hdf hdh hdl hdo hdr hdt hfa hfb hfc hfd hff hfh hfl hfo hfr hft hha hhb hhc hhd hhf hhh hhl hho hhr hht hla hlb hlc hld hlf hlh hll hlo hlr hlt hoa hob hoc hod hof hoh hol hoo hor hot hr- hra hrb hrc hrd hrf hrh hrl hro hrr hrt hta htb htc htd htf hth htl hto htr htt la- laa lab lac lad laf lah lal lao lar lat lba lbb lbc lbd lbf lbh lbl lbo lbr lbt lca lcb lcc lcd lcf lch lcl lco lcr lct lda ldb ldc ldd ldf ldh ldl ldo ldr ldt lfa lfb lfc lfd lff lfh lfl lfo lfr lft lha lhb lhc lhd lhf lhh lho lhr lht lla llb llc lld llf lll llo llr llt loa lob loc lod lof loh lol loo lor lot lra lrb lrc lrd lrf lrh lro lrr lrt lta ltb ltc ltd ltf lth ltl lto ltr ltt oaa oab oac oad oaf oah oal oao oar oat ob- oba obb obc obd obf obh obl obo obr obt oc- oca ocb occ ocd ocf och ocl oco ocr oct oda odb odc odd odf odh odl odo odr odt of- ofa ofb ofc ofd off ofl ofo ofr oft oha ohc ohd ohf ohh ohl oho ohr oht ola olb olc old olf oll olo olt oo- ooa oob ooc ood oof ooh ool ooo oor oot or- ora orb orc ord orf orh orl oro orr ort ot- ota otb otc otd otf oth otl oto otr ott ra- raa rab rac rad raf rah ral rao rar rat rba rbb rbc rbd rbf rbh rbl rbo rbr rbt rca rcb rcc rcd rcf rch rcl rco rcr rct rda rdb rdc rdd rdf rdh rdl rdo rdr rdt rfa rfb rfc rfd rff rfh rfl rfo rfr rft rh- rha rhb rhc rhd rhf rhh rhl rho rhr rht rla rlc rld rlf rlh rll rlo rlr rlt roa rob roc rod rof roh rol roo ror rot rra rrb rrc rrd rrf rrh rrl rrr rrt rta rtb rtc rtd rtf rtl rto rtr rtt taa tab tac tad taf tah tal tao tar tat tba tbb tbc tbd tbf tbh tbl tbo tbr tbt tca tcb tcc tcd tcf tch tcl tco tcr tct tda tdb tdc tdd tdf tdh tdl tdo tdr tdt tfa tfb tfc tfd tff tfh tfl tfo tfr tft th- tha thb thc thd thf thh thl tho thr tht tla tlc tld tlf tlh tll tlo tlr tlt to- toa tob toc tod tof toh tol too tor tot tra trb trc trd trf trh trl tro trr