-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aao aap aar aas aat ab- aba abb abc abd abe abi abo abp abr abs abt ac- aca acb acc acd ace aci aco acp acr acs act ad- ada adb adc add ade adi ado adp adr ads adt aea aeb aec aed aee aei aeo aep aer aes aet ai- aia aib aic aid aie aii aio aip air ais ait aoa aob aoc aod aoe aoi aoo aop aor aos aot ap- apa apb apc apd ape api apo app apr aps apt ar- ara arb arc ard are ari aro arp arr ars art as- asa asb asc asd ase asi aso asp asr ass ast at- ata atb atc atd ate ati ato atp atr ats att b-p baa bab bac bad bae bai bao bap bar bas bat bba bbb bbc bbd bbe bbi bbo bbp bbr bbs bbt bca bcb bcc bcd bce bci bco bcp bcr bcs bct bda bdb bdc bdd bde bdi bdo bdp bdr bds bdt be- bea beb bec bed bee bei beo bep ber bes bet bi- bia bib bic bid bie bii bio bip bir bis bit boa bob boc bod boe boi boo bop bor bos bot bpa bpb bpc bpd bpe bpi bpo bpp bpr bps bpt bra brb brd bre bri bro brp brr brs brt bsa bsb bsc bsd bse bsi bso bsp bsr bss bst bta btb btc btd bte bti bto btp btr bts btt c-- caa cab cac cad cae cai cao cap car cas cat cba cbb cbc cbd cbe cbi cbo cbp cbr cbs cbt cca ccb ccc ccd cce cci cco ccp ccr ccs cct cda cdb cdc cdd cde cdi cdo cdp cdr cds cdt ce- cea ceb cec ced cee cei ceo cep cer ces cet ci- cia cib cic cid cie cii cio cip cir cis cit co- coa cob coc cod coe coi coo cop cor cos cot cpa cpb cpc cpd cpe cpi cpo cpp cpr cps cpt cra crb crc crd cre cri cro crp crr crs crt csa csb csc csd cse csi cso csp csr css cst cta ctb ctc ctd cte cti cto ctp ctr cts ctt daa dab dac dad dae dai dao dap dar das dat dba dbb dbc dbd dbe dbi dbo dbp dbr dbs dbt dca dcb dcc dcd dce dci dco dcp dcr dcs dct dda ddb ddc ddd dde ddi ddo ddp ddr dds ddt de- dea deb dec ded dee dei deo dep der des det di- dia dib dic did die dii dio dip dir dis dit doa dob doc dod doe doi doo dop dor dos dot dpa dpb dpc dpd dpe dpi dpo dpp dpr dps dpt dra drb drc drd dre dri dro drp drr drs drt dsa dsb dsc dsd dse dsi dso dsp dsr dss dst dta dtb dtc dtd dte dti dto dtp dtr dts dtt eaa eab eac ead eae eai eao eap ear eas eat eba ebb ebc ebd ebe ebi ebo ebp ebr ebs ebt ec- eca ecb ecc ecd ece eci eco ecr ecs ect ed- eda edb edc edd ede edi edo edp edr eds edt eea eeb eec eed eee eeo eep eer ees eet eia eib eic eid eie eii eio eip eir eis eit eo- eoa eob eoc eod eoe eoi eoo eop eor eos eot ep- epa epb epc epd epe epi epo epp epr eps ept era erb erc erd ere eri ero erp err ers ert es- esa esb esc esd ese esi eso esp esr ess est eta etb etc etd ete eti eto etp etr ets ett i-d ia- iaa iab iac iad iae iai iao iap iar ias iat iba ibb ibc ibd ibe ibi ibo ibp ibr ibs ibt ica icb icc icd ice ici ico icp icr ics ict ida idb idc idd ide idi ido idp idr ids idt ie- iea iec ied iee iei iep ier ies iet iia iib iic iid iie iii iio iip iir iis iit io- ioa iob ioc iod ioe ioi ioo iop ior ios iot ipa ipb ipc ipd ipe ipi ipo ipp ipr ips ipt ir- ira irb irc ird ire iri iro irp irr irs irt is- isa isb isc isd ise isi iso isp isr iss ist ita itb itc itd ite iti ito itp its itt o-i oaa oab oac oad oae oai oao oap oar oas oat ob- oba obb obc obd obe obi obo obp obr obs obt oc- oca ocb occ ocd oci oco ocp ocr ocs oct oda odb odc odd ode odi odo odp odr ods odt oea oeb oec oed oee oei oeo oep oer oes oet oia oib oic oid oie oii oio oip oir ois oit oo- ooa oob ooc ood ooi ooo oop oor oos oot op- opa opb opc opd ope opi opo opp opr ops opt or- ora orb orc ord ore ori oro orp orr ors ort os- osa osb osc osd ose osi oso osp osr oss ost ot- ota otb otc otd ote oti oto otp otr ots ott p-p paa pab pac pad pae pai pao pap par pas pat pba pbb pbc pbd pbe pbi pbo pbp pbr pbs pbt pca pcb pcc pcd pce pci pco pcp pcr pcs pct pda pdb pdc pdd pde pdi pdo pdp pdr pds pdt pea peb pec ped pee pei peo pep per pes pet pia pib pic pid pie pii pio pip pir pis pit poa pob poc pod poe poi poo pop por pos pot ppa ppb ppc ppd ppe ppi ppo ppp ppr pps ppt pra prb prc prd pre pri pro prp prr prs prt ps- psa psb psc psd pse psi pso psp psr pss pst pt- pta ptb ptc ptd pte