-er a-a a-b aaa aab aad aae aaj aan aao aar ab- aba abb abd abe abj abn abo abr ad- ada adb add ade adj adn ado adr aea aeb aed aee aej aen aeo aer aja ajb ajd aje ajj ajn ajo ajr an- ana anb and ane anj ann ano anr aoa aob aod aoe aoj aon aoo aor ar- ara arb ard are arj arn aro arr baa bab bad bae baj ban bao bar bba bbb bbd bbe bbn bbo bbr bda bdb bdd bde bdj bdo bdr be- bea beb bed bee ben beo ber bja bjd bjj bjn bjr bna bnb bnd bne bnj bnn bno bnr boa bob bod boe boj bon boo bor bra brb brd bre brj brn bro brr daa dab dad dae daj dan dao dar dba dbb dbd dbe dbn dbo dbr dda ddb ddd dde ddn ddo ddr de- dea deb ded dee dej den deo der dj- dja djb djd dje djo dna dnb dnd dne dnj dnn dno dnr doa dob dod doe doj don doo dor dra drb drd dre drj drn dro drr eaa eab ead eae eaj ean eao ear eba ebb ebd ebe ebj ebn ebo ebr ed- eda edb edd ede edj edn edo edr eea eeb eed eee een eeo eer eja ejd ejo en- ena enb end ene enn eno enr eo- eoa eob eod eoe eon eoo eor era erb erd ere ern ero err j-d jaa jab jad jae jaj jan jao jar jba jbj jbo jbr jda jdb jde jdn jdo jdr jea jeb jed jee jej jen jeo jer jja jjb jjj jjr jna jnd jne jnj jnn jno jnr joa job jod joe joj jon joo jor jra jrb jrn jro jrr naa nab nad nae naj nan nao nar nba nbb nbd nbe nbn nbo nbr nda ndb ndd nde ndn ndo ndr ne- nea neb ned nee nej nen neo ner nja nje njn nna nnb nne nnn nno no- noa nob nod noe noj non noo nor nra nrb nrd nre nrj nrn nro nrr oaa oab oad oae oaj oan oao oar ob- oba obb obd obe obj obn obo obr oda odb odd ode odn odo odr oea oeb oed oee oen oeo oer oja ojb ojd oje ojo on- ona onb ond one onj onn ono onr oo- ooa oob ood oon ooo oor or- ora orb ord ore orn oro orr ra- raa rab rad rae raj ran rao rar rba rbb rbd rbe rbn rbo rbr rda rdb rdd rde rdj rdn rdo rdr re- rea reb red ree ren reo rer rja rjr rna rnb rnd rnn rno rnr roa rob rod roe roj ron roo ror rra rrb rrd rrn rrr