-er a-a a-b a-i a-t aaa aab aad aae aai aan aao aap aar aat ab- aba abb abd abe abi abn abo abp abr abt ad- ada adb add ade adi adn ado adp adr adt aea aeb aed aee aei aen aeo aep aer aet ai- aia aib aid aie aii ain aio aip air ait an- ana anb and ane ani ann ano anp anr ant aoa aob aod aoe aoi aon aoo aop aor aot ap- apa apb apd ape api apn apo app apr apt ar- ara arb ard are ari arn aro arp arr art at- ata atb atd ate ati atn ato atp atr att b-p baa bab bad bae bai ban bao bap bar bat bba bbb bbd bbe bbi bbn bbo bbp bbr bbt bda bdb bdd bde bdi bdo bdp bdr bdt be- bea beb bed bee bei ben beo bep ber bet bi- bia bib bid bie bii bin bio bip bir bit bna bnb bnd bne bni bnn bno bnp bnr bnt boa bob bod boe boi bon boo bop bor bot bpa bpb bpd bpe bpi bpn bpo bpp bpr bpt bra brb brd bre bri brn bro brp brr brt bta btb btd bte bti btn bto btp btr btt daa dab dad dae dai dan dao dap dar dat dba dbb dbd dbe dbi dbn dbo dbp dbr dbt dda ddb ddd dde ddi ddn ddo ddp ddr ddt de- dea deb ded dee dei den deo dep der det di- dia dib did die dii din dio dip dir dit dna dnb dnd dne dni dnn dno dnp dnr dnt doa dob dod doe doi don doo dop dor dot dpa dpb dpd dpe dpi dpn dpo dpp dpr dpt dra drb drd dre dri drn dro drp drr drt dta dtb dtd dte dti dtn dto dtp dtr dtt eaa eab ead eae eai ean eao eap ear eat eba ebb ebd ebe ebi ebn ebo ebp ebr ebt ed- eda edb edd ede edi edn edo edp edr edt eea eeb eed eee een eeo eep eer eet eia eib eid eie eii ein eio eip eir eit en- ena enb end ene eni enn eno enp enr ent eo- eoa eob eod eoe eoi eon eoo eop eor eot ep- epa epb epd epe epi epn epo epp epr ept era erb erd ere eri ern ero erp err ert eta etb etd ete eti etn eto etp etr ett i-d ia- iaa iab iad iae iai ian iao iap iar iat iba ibb ibd ibe ibi ibn ibo ibp ibr ibt ida idb idd ide idi idn ido idp idr idt ie- iea ied iee iei ien iep ier iet iia iib iid iie iii iin iio iip iir iit in- ina inb ind ine ini inn ino inp inr int io- ioa iob iod ioe ioi ion ioo iop ior iot ipa ipb ipd ipe ipi ipn ipo ipp ipr ipt ir- ira irb ird ire iri irn iro irp irr irt ita itb itd ite iti itn ito itp itt n-i naa nab nad nae nai nan nao nap nar nat nba nbb nbd nbe nbi nbn nbo nbp nbr nbt nda ndb ndd nde ndi ndn ndo ndp ndr ndt ne- nea neb ned nee nei nen neo nep ner net nia nib nid nie nii nin nio nip nir nit nna nnb nne nni nnn nno nnp nnt no- noa nob nod noe noi non noo nop nor not npa npb npd npe npi npn npo npp npr npt nra nrb nrd nre nri nrn nro nrp nrr nrt nta ntb ntd nte nti ntn nto ntp ntr ntt o-i oaa oab oad oae oai oan oao oap oar oat ob- oba obb obd obe obi obn obo obp obr obt oda odb odd ode odi odn odo odp odr odt oea oeb oed oee oei oen oeo oep oer oet oia oib oid oie oii oin oio oip oir oit on- ona onb ond one oni onn ono onp onr ont oo- ooa oob ood ooi oon ooo oop oor oot op- opa opb opd ope opi opn opo opp opr opt or- ora orb ord ore ori orn oro orp orr ort ot- ota otb otd ote oti otn oto otp otr ott p-p paa pab pad pae pai pan pao pap par pat pba pbb pbd pbe pbi pbn pbo pbp pbr pbt pda pdb pdd pde pdi pdn pdo pdp pdr pdt pea peb ped pee pei pen peo pep per pet pia pib pid pie pii pin pio pip pir pit pn- pna pnb pnd pne pni pnn pno pnp pnr pnt poa pob pod poe poi pon poo pop por pot ppa ppb ppd ppe ppi ppn ppo ppp ppr ppt pra prb prd pre pri prn pro prp prr prt pt- pta ptb ptd pte pti ptn pto ptp ptr ptt ra- raa rab rad rae rai ran rao rap rar rat rba rbb rbd rbe rbi rbn rbo rbp rbr rbt rda rdb rdd rde rdi rdn rdo rdp rdr rdt re- rea reb red ree rei ren reo rep rer ret ria rib rid rie rii rin rio rip rir rit rna rnb rnd rni rnn rno rnp rnr rnt roa rob rod roe roi ron roo rop ror rot rpa rpb rpd rpe rpi rpn rpo rpp rpr rpt rra rrb rrd rri rrn rrp rrr rrt rta rtb rtd rte rti rtn rto rtp rtr rtt taa tab tad tae tai tan tao tap tar tat tba tbb tbd tbe tbi tbn tbo tbp tbr tbt tda tdb tdd tde tdi tdn tdo tdp tdr tdt te- tea teb ted tee tei ten teo tep ter tet tia tib tid tie tii tin tio tip tir tit tna tnb tnd tne tni tnn tno tnp tnr tnt to- toa tob tod toe toi ton too