-er -th a-a a-b a-t aaa aab aad aae aah aao aar aat ab- aba abb abd abe abh abo abr abt ad- ada adb add ade adh ado adr adt aea aeb aed aee aeh aeo aer aet aha ahb ahd ahe ahh aho ahr aht aoa aob aod aoe aoh aoo aor aot ar- ara arb ard are arh aro arr art at- ata atb atd ate ath ato atr att baa bab bad bae bah bao bar bat bba bbb bbd bbe bbh bbo bbr bbt bda bdb bdd bde bdh bdo bdr bdt be- bea beb bed bee beh beo ber bet bha bhb bhd bhe bhh bho bhr bht boa bob bod boe boh boo bor bot bra brb brd bre brh bro brr brt bta btb btd bte bth bto btr btt daa dab dad dae dah dao dar dat dba dbb dbd dbe dbh dbo dbr dbt dda ddb ddd dde ddh ddo ddr ddt de- dea deb ded dee deh deo der det dh- dha dhb dhd dhe dhh dho dhr dht doa dob dod doe doh doo dor dot dra drb drd dre dro drr drt dta dtb dtd dte dth dto dtr dtt eaa eab ead eae eah eao ear eat eba ebb ebd ebe ebh ebo ebr ebt ed- eda edb edd ede edh edo edr edt eea eeb eed eee eeo eer eet eha ehb ehd ehe ehh eho ehr eht eo- eoa eob eod eoe eoh eoo eor eot era erb erd ere erh ero err ert eta etb etd ete eth eto etr ett haa hab had hae hah hao har hat hba hbb hbd hbe hbh hbo hbr hbt hda hdb hdd hde hdh hdo hdr hdt he- hea heb hed hee heh heo her het hha hhb hhd hhe hhh hho hhr hht hoa hob hod hoe hoh hoo hor hot hr- hra hrb hrd hre hrh hro hrr hrt hta htb htd hte hth hto htr htt oaa oab oad oae oah oao oar oat ob- oba obb obd obe obh obo obr obt oda odb odd ode odh odo odr odt oea oeb oed oee oeh oeo oer oet oha ohd ohe ohh oho ohr oht oo- ooa oob ood ooh ooo oor oot or- ora orb ord ore orh oro orr ort ot- ota otb otd ote oth oto otr ott ra- raa rab rad rae rah rao rar rat rba rbb rbd rbe rbh rbo rbr rbt rda rdb rdd rde rdh rdo rdr rdt re- rea reb red ree reh reo rer ret rh- rha rhb rhd rhe rhh rho rhr rht roa rob rod roe roh roo ror rot rra rrb rrd rrh rrr rrt rta rtb rtd rte rto rtr rtt taa tab tad tae tah tao tar tat tba tbb tbd tbe tbh tbo tbr tbt tda tdb tdd tde tdh tdo tdr tdt te- tea teb ted tee teh teo ter tet th- tha thb thd the thh tho thr tht to- toa tob tod toe toh too tor tot tra trb trd tre trh tro trr trt tta ttb ttd tte tth tto ttr ttt