-er a-a a-b a-i a-t aaa aab aae aai aak aan aao aap aar aas aat ab- aba abb abe abi abk abn abo abp abr abs abt aea aeb aee aei aek aen aeo aep aer aes aet ai- aia aib aie aii aik ain aio aip air ais ait aka akb ake aki akk akn ako akp akr aks an- ana anb ane ani ank ann ano anp anr ans ant aoa aob aoe aoi aok aon aoo aop aor aos aot ap- apa apb ape api apk apn apo app apr aps apt ar- ara arb are ari ark arn aro arp arr ars art as- asa asb ase asi ask asn aso asp asr ass ast at- ata atb ate ati atn ato atp atr ats att b-p baa bab bae bai bak ban bao bap bar bas bat bba bbb bbe bbi bbk bbn bbo bbp bbr bbs bbt be- bea beb bee bei bek ben beo bep ber bes bet bi- bia bib bie bii bik bin bio bip bir bis bit bka bkb bke bkk bkn bko bkp bkr bks bkt bna bnb bne bni bnk bnn bno bnp bnr bns bnt boa bob boe boi bok bon boo bop bor bos bot bpa bpb bpe bpi bpn bpo bpp bpr bps bpt bra brb bre bri brk brn bro brp brr brs brt bsa bsb bse bsi bsk bsn bso bsp bsr bss bst bta btb bte bti btk btn bto btp btr bts btt eaa eab eae eai eak ean eao eap ear eas eat eba ebb ebe ebi ebk ebn ebo ebp ebr ebs ebt eea eeb eee eek een eeo eep eer ees eet eia eib eie eii eik ein eio eip eir eis eit eka ekb eke eki eko ekp ekr eks ekt en- ena enb ene eni enk enn eno enp enr ens ent eo- eoa eob eoe eoi eok eon eoo eop eor eos eot ep- epa epb epe epi epn epo epp epr eps ept era erb ere eri erk ern ero erp err ers ert es- esa esb ese esi esk esn eso esp esr ess est eta etb ete eti etk etn eto etp etr ets ett ia- iaa iab iae iai ian iao iap iar ias iat iba ibb ibe ibi ibk ibn ibo ibp ibr ibs ibt ie- iea iee iei iek ien iep ier ies iet iia iib iie iii iin iio iip iir iis iit ika ikb ike iki ikk iko ikr iks ikt in- ina inb ine ini ink inn ino inp inr ins int io- ioa iob ioe ioi ion ioo iop ior ios iot ipa ipb ipe ipi ipn ipo ipp ipr ips ipt ir- ira irb ire iri irk irn iro irp irr irs irt is- isa isb ise isi isk isn iso isp isr iss ist ita itb ite iti itk itn ito itp its itt k-t ka- kaa kab kae kai kak kan kao kap kar kas kat kba kbb kbe kbi kbk kbn kbo kbp kbr kbs ke- kea keb kee kei kek ken keo kep ker kes ket kia kib kie kii kik kin kio kip kir kis kit kkb kke kki kkk kkn kkp kkr kks kkt kn- kna kne kni knk knn kno knp knr knt koa kob koe koi kok kon koo kop kor kos kot kpa kpe kpi kpk kpn kpo kpp kpr kps kpt kra kri krk krn kro krp krr krs krt ksa ksb kse ksi ksk ksn kso ksp ksr kss kst kta ktb kte ktk ktn kto ktp ktr kts ktt n-i naa nab nae nai nak nan nao nap nar nas nat nba nbb nbe nbi nbk nbn nbo nbp nbr nbs nbt ne- nea neb nee nei nek nen neo nep ner nes net nia nib nie nii nik nin nio nip nir nis nit nka nke nki nkk nkn nko nkp nkr nks nkt nna nnb nne nni nnk nnn nno nnp nns nnt no- noa nob noe noi nok non noo nop nor nos not npa npb npe npi npn npo npp npr nps npt nra nrb nre nri nrk nrn nro nrp nrr nrs nrt nsa nsb nse nsi nsk nsn nso nsp nsr nss nst nta ntb nte nti ntk ntn nto ntp ntr nts ntt o-i oaa oab oae oai oak oan oao oap oar oas oat ob- oba obb obe obi obk obn obo obp obr obs obt oea oeb oee oei oen oeo oep oer oes oet oia oib oie oii oik oin oio oip oir ois oit oka okb oke oki okk oko okp okr oks on- ona onb one oni onk onn ono onp onr ons ont oo- ooa oob ooi ook oon ooo oop oor oos oot op- opa opb ope opi opk opn opo opp opr ops opt or- ora orb ore ori ork orn oro orp orr ors ort os- osa osb ose osi osk osn oso osp osr oss ost ot- ota otb ote oti otk otn oto otp otr ots ott p-p paa pab pae pai pak pan pao pap par pas pat pba pbb pbe pbi pbk pbn pbo pbp pbr pbs pbt pea peb pee pei pek pen peo pep per pes pet pia pib pie pii pik pin pio pip pir pis pit pka pkb pke pki pkn pko pkp pkr pks pkt pn- pna pnb pne pni pnk pnn pno pnp pnr pns pnt poa pob poe poi pok pon poo pop por pos pot ppa ppb ppe ppi ppk ppn ppo ppp ppr pps ppt pra prb pre pri prk prn pro prp prr prs prt ps- psa psb pse psi psk psn pso psp psr pss pst pt- pta ptb pte pti ptk ptn pto ptp ptr pts ptt ra- raa rab rae rai rak ran rao rap rar ras rat rba rbb rbe rbi rbk rbn rbo rbp rbr rbs