-er a-a a-b aaa aab aad aae aah aan aao aap aar ab- aba abb abd abe abh abn abo abp abr ad- ada adb add ade adh adn ado adp adr aea aeb aed aee aeh aen aeo aep aer aha ahb ahd ahe ahh ahn aho ahp ahr an- ana anb and ane anh ann ano anp anr aoa aob aod aoe aoh aon aoo aop aor ap- apa apb apd ape aph apn apo app apr ar- ara arb ard are arh arn aro arp arr b-p baa bab bad bae bah ban bao bap bar bba bbb bbd bbe bbh bbn bbo bbp bbr bda bdb bdd bde bdh bdo bdp bdr be- bea beb bed bee beh ben beo bep ber bha bhb bhd bhe bhh bho bhp bhr bna bnb bnd bne bnn bno bnp bnr boa bob bod boe boh bon boo bop bor bpa bpb bpd bpe bph bpn bpo bpp bpr bra brb brd bre brh brn bro brp brr daa dab dad dae dah dan dao dap dar dba dbb dbd dbe dbh dbn dbo dbp dbr dda ddb ddd dde ddh ddn ddo ddp ddr de- dea deb ded dee deh den deo dep der dh- dha dhb dhd dhe dhh dho dhp dhr dna dnb dnd dne dnh dnn dno dnp dnr doa dob dod doe doh don doo dop dor dpa dpb dpd dpe dph dpn dpo dpp dpr dra drb drd dre drn dro drp drr eaa eab ead eae eah ean eao eap ear eba ebb ebd ebe ebh ebn ebo ebp ebr ed- eda edb edd ede edh edn edo edp edr eea eeb eed eee een eeo eep eer eha ehb ehd ehe ehh ehn eho ehp ehr en- ena enb end ene enh enn eno enp enr eo- eoa eob eod eoe eoh eon eoo eop eor ep- epa epb epd epe eph epn epo epp epr era erb erd ere erh ern ero erp err haa hab had hae hah han hao hap har hba hbb hbd hbe hbh hbn hbo hbp hbr hda hdb hdd hde hdh hdn hdo hdp hdr he- hea heb hed hee heh hen heo hep her hha hhb hhd hhe hhh hhn hho hhp hhr hna hnb hnd hne hnh hnn hno hoa hob hod hoe hoh hon hoo hop hor hpa hpb hpd hpe hph hpn hpo hpp hpr hr- hra hrb hrd hre hrh hrn hro hrp hrr naa nab nad nae nah nan nao nap nar nba nbb nbd nbe nbn nbo nbp nbr nda ndb ndd nde ndh ndn ndo ndp ndr ne- nea neb ned nee neh nen neo nep ner nha nhb nhd nhe nhh nhn nhp nhr nna nnb nne nnh nnn nno nnp no- noa nob nod noe noh non noo nop nor npa npb npd npe nph npn npo npp npr nra nrb nrd nre nrn nro nrp nrr oaa oab oad oae oah oan oao oap oar ob- oba obb obd obe obh obn obo obp obr oda odb odd ode odh odn odo odp odr oea oeb oed oee oeh oen oeo oep oer oha ohd ohe ohh ohn oho ohp ohr on- ona onb ond one onh onn ono onp onr oo- ooa oob ood ooh oon ooo oop oor op- opa opb opd ope oph opn opo opp opr or- ora orb ord ore orh orn oro orp orr p-p paa pab pad pae pah pan pao pap par pba pbb pbd pbe pbn pbo pbp pbr pda pdb pdd pde pdh pdn pdo pdp pdr pea peb ped pee peh pen peo pep per pha phb phd phe phn pho php phr pn- pna pnb pnd pne pnh pnn pno pnp pnr poa pob pod poe poh pon poo pop por ppa ppb ppd ppe pph ppn ppo ppp ppr pra prb prd pre prh prn pro prp prr ra- raa rab rad rae rah ran rao rap rar rba rbb rbd rbe rbh rbn rbo rbp rbr rda rdb rdd rde rdh rdn rdo rdp rdr re- rea reb red ree reh ren reo rep rer rh- rha rhb rhd rhe rhh rhn rho rhp rhr rna rnb rnd rnh rnn rno rnp rnr roa rob rod roe roh ron roo rop ror rpa rpb rpd rpe rph rpn rpo rpp rpr rra rrb rrd rrh rrn rrp rrr