-er -th a-a a-b a-c a-t aaa aab aac aad aae aah aak aao aar aat ab- aba abb abc abd abe abh abk abo abr abt ac- aca acb acc acd ace ach ack aco acr act ad- ada adb adc add ade adh adk ado adr adt aea aeb aec aed aee aeh aek aeo aer aet aha ahb ahc ahd ahe ahh ahk aho ahr aht aka akb akc akd ake akh akk ako akr aoa aob aoc aod aoe aoh aok aoo aor aot ar- ara arb arc ard are arh ark aro arr art at- ata atb atc atd ate ath ato atr att baa bab bac bad bae bah bak bao bar bat bba bbb bbc bbd bbe bbh bbk bbo bbr bbt bca bcb bcc bcd bce bch bck bco bcr bct bda bdb bdc bdd bde bdh bdk bdo bdr bdt be- bea beb bec bed bee beh bek beo ber bet bha bhb bhc bhd bhe bhh bhk bho bhr bht bka bkb bkc bke bkk bko bkr bkt boa bob boc bod boe boh bok boo bor bot bra brb brd bre brh brk bro brr brt bta btb btc btd bte bth btk bto btr btt c-- caa cab cac cad cae cah cak cao car cat cba cbb cbc cbd cbe cbh cbk cbo cbr cbt cca ccb ccc ccd cce cch cck cco ccr cct cda cdb cdc cdd cde cdh cdk cdo cdr cdt ce- cea ceb cec ced cee ceh cek ceo cer cet ch- cha chb chc chd che chh chk cho chr cht cka ckb ckc ckd ckh cko ckt co- coa cob coc cod coe coh cok coo cor cot cra crb crc crd cre crh crk cro crr crt cta ctb ctc ctd cte cth ctk cto ctr ctt daa dab dac dad dae dah dak dao dar dat dba dbb dbc dbd dbe dbh dbk dbo dbr dbt dca dcb dcc dcd dce dck dco dcr dct dda ddb ddc ddd dde ddh ddk ddo ddr ddt de- dea deb dec ded dee deh dek deo der det dh- dha dhb dhc dhd dhe dhh dhk dho dhr dht dka dkb dkc dke dkk dko dkr dkt doa dob doc dod doe doh dok doo dor dot dra drb drc drd dre drk dro drr drt dta dtb dtc dtd dte dth dtk dto dtr dtt eaa eab eac ead eae eah eak eao ear eat eba ebb ebc ebd ebe ebh ebk ebo ebr ebt ec- eca ecb ecc ecd ece ech eck eco ecr ect ed- eda edb edc edd ede edh edk edo edr edt eea eeb eec eed eee eek eeo eer eet eha ehb ehc ehd ehe ehh eho ehr eht eka ekb ekc ekd eke ekh eko ekr ekt eo- eoa eob eoc eod eoe eoh eok eoo eor eot era erb erc erd ere erh erk ero err ert eta etb etc etd ete eth etk eto etr ett haa hab hac had hae hah hak hao har hat hba hbb hbc hbd hbe hbh hbk hbo hbr hbt hca hcb hcc hcd hce hch hck hco hcr hct hda hdb hdc hdd hde hdh hdk hdo hdr hdt he- hea heb hec hed hee heh hek heo her het hha hhb hhc hhd hhe hhh hhk hho hhr hht hka hkb hkd hkh hkk hko hkr hkt hoa hob hoc hod hoe hoh hok hoo hor hot hr- hra hrb hrc hrd hre hrh hrk hro hrr hrt hta htb htc htd hte hth htk hto htr htt k-t ka- kaa kab kac kad kae kah kak kao kar kat kba kbb kbc kbd kbe kbh kbk kbo kbr kca kcb kcc kcd kce kch kck kcr kct kda kdb kdc kde kdh kdk kdo kdr kdt ke- kea keb kec ked kee keh kek keo ker ket kha khe khh khk kho khr kkb kkc kke kkh kkk kkr kkt koa kob koc kod koe koh kok koo kor kot kra krc krd krk kro krr krt kta ktb ktc kte kth ktk kto ktr ktt oaa oab oac oad oae oah oak oao oar oat ob- oba obb obc obd obe obh obk obo obr obt oc- oca ocb occ ocd och ock oco ocr oct oda odb odc odd ode odh odo odr odt oea oeb oec oed oee oeh oeo oer oet oha ohc ohd ohe ohh oho ohr oht oka okb okc okd oke okk oko okr oo- ooa oob ooc ood ooh ook ooo oor oot or- ora orb orc ord ore orh ork oro orr ort ot- ota otb otc otd ote oth otk oto otr ott ra- raa rab rac rad rae rah rak rao rar rat rba rbb rbc rbd rbe rbh rbk rbo rbr rbt rca rcb rcc rcd rce rch rco rcr rct rda rdb rdc rdd rde rdh rdo rdr rdt re- rea reb rec red ree reh rek reo rer ret rh- rha rhb rhc rhd rhe rhh rho rhr rht rkb rkc rke rkk rko rkt roa rob roc rod roe roh rok roo ror rot rra rrb rrc rrd rrh rrk rrr rrt rta rtb rtc rtd rte rtk rto rtr rtt taa tab tac tad tae tah tak tao tar tat tba tbb tbc tbd tbe tbh tbk tbo tbr tbt tca tcb tcc tcd tce tch tck tco tcr tct tda tdb tdc tdd tde tdh tdk tdo tdr tdt te- tea teb tec ted tee teh tek teo ter tet th- tha thb thc thd the thh thk tho thr tht tka tkb tkc tke tkk tko tkr tkt to- toa tob toc tod toe toh tok too tor tot tra trb trc trd tre trh trk tro trr trt tta ttb ttc ttd tte tth ttk tto ttr ttt