-er a-a a-b a-t aaa aab aad aae aaj aao aar aat ab- aba abb abd abe abj abo abr abt ad- ada adb add ade adj ado adr adt aea aeb aed aee aej aeo aer aet aja ajb ajd aje ajj ajo ajr ajt aoa aob aod aoe aoj aoo aor aot ar- ara arb ard are arj aro arr art at- ata atb atd ate ato atr att baa bab bad bae baj bao bar bat bba bbb bbd bbe bbo bbr bbt bda bdb bdd bde bdj bdo bdr bdt be- bea beb bed bee beo ber bet bja bjd bjj bjr bjt boa bob bod boe boj boo bor bot bra brb brd bre brj bro brr brt bta btb btd bte bto btr btt daa dab dad dae daj dao dar dat dba dbb dbd dbe dbo dbr dbt dda ddb ddd dde ddo ddr ddt de- dea deb ded dee dej deo der det dj- dja djb djd dje djo djt doa dob dod doe doj doo dor dot dra drb drd dre drj dro drr drt dta dtb dtd dte dtj dto dtr dtt eaa eab ead eae eaj eao ear eat eba ebb ebd ebe ebj ebo ebr ebt ed- eda edb edd ede edj edo edr edt eea eeb eed eee eeo eer eet eja ejd ejo ejt eo- eoa eob eod eoe eoo eor eot era erb erd ere ero err ert eta etb etd ete etj eto etr ett j-d jaa jab jad jae jaj jao jar jat jba jbj jbo jbr jbt jda jdb jde jdo jdr jdt jea jeb jed jee jej jeo jer jet jja jjb jjj jjr joa job jod joe joj joo jor jot jra jrb jro jrr jrt jta jtb jte jtr jtt oaa oab oad oae oaj oao oar oat ob- oba obb obd obe obj obo obr obt oda odb odd ode odo odr odt oea oeb oed oee oeo oer oet oja ojb ojd oje ojo oo- ooa oob ood ooo oor oot or- ora orb ord ore oro orr ort ot- ota otb otd ote oto otr ott ra- raa rab rad rae raj rao rar rat rba rbb rbd rbe rbo rbr rbt rda rdb rdd rde rdj rdo rdr rdt re- rea reb red ree reo rer ret rja rjr roa rob rod roe roj roo ror rot rra rrb rrd rrr rrt rta rtb rtd rte rtj rto rtr rtt taa tab tad tae taj tao tar tat tba tbb tbd tbe tbj tbo tbr tbt tda tdb tdd tde tdo tdr tdt te- tea teb ted tee tej teo ter tet tjd tje tjo tjr to- toa tob tod toe toj too tor tot tra trb trd tre tro trr trt tta ttb ttd tte tto ttr ttt